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f671769766
Instead of casting listmax and numdirs to unsigned values just define them as unsigned and avoid the casts. Use reallocarray(3). While here, fs_ncg is already unsigned so the cast is unnecessary. Reviewed by: mckusick MFC after: 2 weeks
476 lines
18 KiB
C
476 lines
18 KiB
C
/*
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by Marshall
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* Kirk McKusick and Network Associates Laboratories, the Security
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* Research Division of Network Associates, Inc. under DARPA/SPAWAR
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* contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
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* research program.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* 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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* @(#)fsck.h 8.4 (Berkeley) 5/9/95
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* $FreeBSD$
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*/
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#ifndef _FSCK_H_
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#define _FSCK_H_
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/queue.h>
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#define MAXDUP 10 /* limit on dup blks (per inode) */
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#define MAXBAD 10 /* limit on bad blks (per inode) */
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#define MINBUFS 10 /* minimum number of buffers required */
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#define MAXBUFS 40 /* maximum space to allocate to buffers */
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#define INOBUFSIZE 64*1024 /* size of buffer to read inodes in pass1 */
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#define ZEROBUFSIZE (dev_bsize * 128) /* size of zero buffer used by -Z */
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union dinode {
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struct ufs1_dinode dp1;
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struct ufs2_dinode dp2;
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};
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#define DIP(dp, field) \
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((sblock.fs_magic == FS_UFS1_MAGIC) ? \
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(dp)->dp1.field : (dp)->dp2.field)
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#define DIP_SET(dp, field, val) do { \
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if (sblock.fs_magic == FS_UFS1_MAGIC) \
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(dp)->dp1.field = (val); \
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else \
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(dp)->dp2.field = (val); \
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} while (0)
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/*
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* Each inode on the file system is described by the following structure.
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* The linkcnt is initially set to the value in the inode. Each time it
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* is found during the descent in passes 2, 3, and 4 the count is
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* decremented. Any inodes whose count is non-zero after pass 4 needs to
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* have its link count adjusted by the value remaining in ino_linkcnt.
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*/
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struct inostat {
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char ino_state; /* state of inode, see below */
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char ino_type; /* type of inode */
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short ino_linkcnt; /* number of links not found */
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};
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/*
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* Inode states.
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*/
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#define USTATE 0x1 /* inode not allocated */
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#define FSTATE 0x2 /* inode is file */
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#define FZLINK 0x3 /* inode is file with a link count of zero */
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#define DSTATE 0x4 /* inode is directory */
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#define DZLINK 0x5 /* inode is directory with a zero link count */
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#define DFOUND 0x6 /* directory found during descent */
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/* 0x7 UNUSED - see S_IS_DVALID() definition */
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#define DCLEAR 0x8 /* directory is to be cleared */
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#define FCLEAR 0x9 /* file is to be cleared */
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/* DUNFOUND === (state == DSTATE || state == DZLINK) */
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#define S_IS_DUNFOUND(state) (((state) & ~0x1) == DSTATE)
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/* DVALID === (state == DSTATE || state == DZLINK || state == DFOUND) */
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#define S_IS_DVALID(state) (((state) & ~0x3) == DSTATE)
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#define INO_IS_DUNFOUND(ino) S_IS_DUNFOUND(inoinfo(ino)->ino_state)
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#define INO_IS_DVALID(ino) S_IS_DVALID(inoinfo(ino)->ino_state)
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/*
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* Inode state information is contained on per cylinder group lists
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* which are described by the following structure.
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*/
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struct inostatlist {
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long il_numalloced; /* number of inodes allocated in this cg */
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struct inostat *il_stat;/* inostat info for this cylinder group */
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} *inostathead;
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/*
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* buffer cache structure.
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*/
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struct bufarea {
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TAILQ_ENTRY(bufarea) b_list; /* buffer list */
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ufs2_daddr_t b_bno;
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int b_size;
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int b_errs;
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int b_flags;
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int b_type;
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union {
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char *b_buf; /* buffer space */
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ufs1_daddr_t *b_indir1; /* UFS1 indirect block */
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ufs2_daddr_t *b_indir2; /* UFS2 indirect block */
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struct fs *b_fs; /* super block */
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struct cg *b_cg; /* cylinder group */
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struct ufs1_dinode *b_dinode1; /* UFS1 inode block */
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struct ufs2_dinode *b_dinode2; /* UFS2 inode block */
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} b_un;
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char b_dirty;
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};
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#define IBLK(bp, i) \
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((sblock.fs_magic == FS_UFS1_MAGIC) ? \
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(bp)->b_un.b_indir1[i] : (bp)->b_un.b_indir2[i])
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#define IBLK_SET(bp, i, val) do { \
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if (sblock.fs_magic == FS_UFS1_MAGIC) \
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(bp)->b_un.b_indir1[i] = (val); \
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else \
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(bp)->b_un.b_indir2[i] = (val); \
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} while (0)
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/*
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* Buffer flags
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*/
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#define B_INUSE 0x00000001 /* Buffer is in use */
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/*
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* Type of data in buffer
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*/
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#define BT_UNKNOWN 0 /* Buffer holds a superblock */
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#define BT_SUPERBLK 1 /* Buffer holds a superblock */
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#define BT_CYLGRP 2 /* Buffer holds a cylinder group map */
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#define BT_LEVEL1 3 /* Buffer holds single level indirect */
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#define BT_LEVEL2 4 /* Buffer holds double level indirect */
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#define BT_LEVEL3 5 /* Buffer holds triple level indirect */
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#define BT_EXTATTR 6 /* Buffer holds external attribute data */
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#define BT_INODES 7 /* Buffer holds external attribute data */
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#define BT_DIRDATA 8 /* Buffer holds directory data */
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#define BT_DATA 9 /* Buffer holds user data */
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#define BT_NUMBUFTYPES 10
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#define BT_NAMES { \
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"unknown", \
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"Superblock", \
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"Cylinder Group", \
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"Single Level Indirect", \
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"Double Level Indirect", \
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"Triple Level Indirect", \
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"External Attribute", \
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"Inode Block", \
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"Directory Contents", \
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"User Data" }
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extern long readcnt[BT_NUMBUFTYPES];
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extern long totalreadcnt[BT_NUMBUFTYPES];
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extern struct timespec readtime[BT_NUMBUFTYPES];
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extern struct timespec totalreadtime[BT_NUMBUFTYPES];
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extern struct timespec startprog;
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extern struct bufarea sblk; /* file system superblock */
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extern struct bufarea *pdirbp; /* current directory contents */
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extern struct bufarea *pbp; /* current inode block */
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#define dirty(bp) do { \
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if (fswritefd < 0) \
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pfatal("SETTING DIRTY FLAG IN READ_ONLY MODE\n"); \
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else \
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(bp)->b_dirty = 1; \
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} while (0)
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#define initbarea(bp, type) do { \
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(bp)->b_dirty = 0; \
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(bp)->b_bno = (ufs2_daddr_t)-1; \
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(bp)->b_flags = 0; \
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(bp)->b_type = type; \
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} while (0)
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#define sbdirty() dirty(&sblk)
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#define sblock (*sblk.b_un.b_fs)
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enum fixstate {DONTKNOW, NOFIX, FIX, IGNORE};
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extern ino_t cursnapshot;
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struct inodesc {
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enum fixstate id_fix; /* policy on fixing errors */
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int (*id_func)(struct inodesc *);
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/* function to be applied to blocks of inode */
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ino_t id_number; /* inode number described */
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ino_t id_parent; /* for DATA nodes, their parent */
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ufs_lbn_t id_lbn; /* logical block number of current block */
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ufs2_daddr_t id_blkno; /* current block number being examined */
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int id_numfrags; /* number of frags contained in block */
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off_t id_filesize; /* for DATA nodes, the size of the directory */
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ufs2_daddr_t id_entryno;/* for DATA nodes, current entry number */
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int id_loc; /* for DATA nodes, current location in dir */
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struct direct *id_dirp; /* for DATA nodes, ptr to current entry */
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char *id_name; /* for DATA nodes, name to find or enter */
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char id_type; /* type of descriptor, DATA or ADDR */
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};
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/* file types */
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#define DATA 1 /* a directory */
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#define SNAP 2 /* a snapshot */
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#define ADDR 3 /* anything but a directory or a snapshot */
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/*
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* Linked list of duplicate blocks.
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*
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* The list is composed of two parts. The first part of the
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* list (from duplist through the node pointed to by muldup)
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* contains a single copy of each duplicate block that has been
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* found. The second part of the list (from muldup to the end)
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* contains duplicate blocks that have been found more than once.
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* To check if a block has been found as a duplicate it is only
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* necessary to search from duplist through muldup. To find the
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* total number of times that a block has been found as a duplicate
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* the entire list must be searched for occurrences of the block
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* in question. The following diagram shows a sample list where
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* w (found twice), x (found once), y (found three times), and z
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* (found once) are duplicate block numbers:
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*
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* w -> y -> x -> z -> y -> w -> y
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* ^ ^
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* | |
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* duplist muldup
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*/
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struct dups {
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struct dups *next;
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ufs2_daddr_t dup;
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};
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struct dups *duplist; /* head of dup list */
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struct dups *muldup; /* end of unique duplicate dup block numbers */
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/*
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* Inode cache data structures.
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*/
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struct inoinfo {
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struct inoinfo *i_nexthash; /* next entry in hash chain */
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ino_t i_number; /* inode number of this entry */
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ino_t i_parent; /* inode number of parent */
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ino_t i_dotdot; /* inode number of `..' */
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size_t i_isize; /* size of inode */
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u_int i_numblks; /* size of block array in bytes */
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ufs2_daddr_t i_blks[1]; /* actually longer */
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} **inphead, **inpsort;
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extern long dirhash, inplast;
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extern unsigned long numdirs, listmax;
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extern long countdirs; /* number of directories we actually found */
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#define MIBSIZE 3 /* size of fsck sysctl MIBs */
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extern int adjrefcnt[MIBSIZE]; /* MIB command to adjust inode reference cnt */
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extern int adjblkcnt[MIBSIZE]; /* MIB command to adjust inode block count */
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extern int adjndir[MIBSIZE]; /* MIB command to adjust number of directories */
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extern int adjnbfree[MIBSIZE]; /* MIB command to adjust number of free blocks */
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extern int adjnifree[MIBSIZE]; /* MIB command to adjust number of free inodes */
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extern int adjnffree[MIBSIZE]; /* MIB command to adjust number of free frags */
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extern int adjnumclusters[MIBSIZE]; /* MIB command to adjust number of free clusters */
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extern int freefiles[MIBSIZE]; /* MIB command to free a set of files */
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extern int freedirs[MIBSIZE]; /* MIB command to free a set of directories */
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extern int freeblks[MIBSIZE]; /* MIB command to free a set of data blocks */
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extern struct fsck_cmd cmd; /* sysctl file system update commands */
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extern char snapname[BUFSIZ]; /* when doing snapshots, the name of the file */
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extern char *cdevname; /* name of device being checked */
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extern long dev_bsize; /* computed value of DEV_BSIZE */
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extern long secsize; /* actual disk sector size */
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extern u_int real_dev_bsize; /* actual disk sector size, not overridden */
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extern char nflag; /* assume a no response */
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extern char yflag; /* assume a yes response */
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extern int bkgrdflag; /* use a snapshot to run on an active system */
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extern ufs2_daddr_t bflag; /* location of alternate super block */
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extern int debug; /* output debugging info */
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extern int Eflag; /* delete empty data blocks */
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extern int Zflag; /* zero empty data blocks */
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extern int inoopt; /* trim out unused inodes */
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extern char ckclean; /* only do work if not cleanly unmounted */
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extern int cvtlevel; /* convert to newer file system format */
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extern int bkgrdcheck; /* determine if background check is possible */
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extern int bkgrdsumadj; /* whether the kernel have ability to adjust superblock summary */
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extern char usedsoftdep; /* just fix soft dependency inconsistencies */
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extern char preen; /* just fix normal inconsistencies */
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extern char rerun; /* rerun fsck. Only used in non-preen mode */
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extern int returntosingle; /* 1 => return to single user mode on exit */
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extern char resolved; /* cleared if unresolved changes => not clean */
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extern char havesb; /* superblock has been read */
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extern char skipclean; /* skip clean file systems if preening */
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extern int fsmodified; /* 1 => write done to file system */
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extern int fsreadfd; /* file descriptor for reading file system */
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extern int fswritefd; /* file descriptor for writing file system */
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extern int surrender; /* Give up if reads fail */
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extern int wantrestart; /* Restart fsck on early termination */
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extern ufs2_daddr_t maxfsblock; /* number of blocks in the file system */
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extern char *blockmap; /* ptr to primary blk allocation map */
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extern ino_t maxino; /* number of inodes in file system */
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extern ino_t lfdir; /* lost & found directory inode number */
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extern const char *lfname; /* lost & found directory name */
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extern int lfmode; /* lost & found directory creation mode */
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extern ufs2_daddr_t n_blks; /* number of blocks in use */
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extern ino_t n_files; /* number of files in use */
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extern volatile sig_atomic_t got_siginfo; /* received a SIGINFO */
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extern volatile sig_atomic_t got_sigalarm; /* received a SIGALRM */
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#define clearinode(dp) \
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if (sblock.fs_magic == FS_UFS1_MAGIC) { \
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(dp)->dp1 = ufs1_zino; \
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} else { \
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(dp)->dp2 = ufs2_zino; \
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}
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extern struct ufs1_dinode ufs1_zino;
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extern struct ufs2_dinode ufs2_zino;
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#define setbmap(blkno) setbit(blockmap, blkno)
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#define testbmap(blkno) isset(blockmap, blkno)
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#define clrbmap(blkno) clrbit(blockmap, blkno)
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#define STOP 0x01
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#define SKIP 0x02
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#define KEEPON 0x04
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#define ALTERED 0x08
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#define FOUND 0x10
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#define EEXIT 8 /* Standard error exit. */
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#define ERESTART -1
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int flushentry(void);
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/*
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* Wrapper for malloc() that flushes the cylinder group cache to try
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* to get space.
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*/
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static inline void*
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Malloc(size_t size)
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{
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void *retval;
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while ((retval = malloc(size)) == NULL)
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if (flushentry() == 0)
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break;
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return (retval);
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}
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/*
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* Wrapper for calloc() that flushes the cylinder group cache to try
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* to get space.
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*/
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static inline void*
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Calloc(size_t cnt, size_t size)
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{
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void *retval;
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while ((retval = calloc(cnt, size)) == NULL)
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if (flushentry() == 0)
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break;
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return (retval);
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}
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struct fstab;
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void adjust(struct inodesc *, int lcnt);
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ufs2_daddr_t allocblk(long frags);
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ino_t allocdir(ino_t parent, ino_t request, int mode);
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ino_t allocino(ino_t request, int type);
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void blkerror(ino_t ino, const char *type, ufs2_daddr_t blk);
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char *blockcheck(char *name);
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int blread(int fd, char *buf, ufs2_daddr_t blk, long size);
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void bufinit(void);
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void blwrite(int fd, char *buf, ufs2_daddr_t blk, ssize_t size);
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void blerase(int fd, ufs2_daddr_t blk, long size);
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void blzero(int fd, ufs2_daddr_t blk, long size);
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void cacheino(union dinode *dp, ino_t inumber);
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void catch(int);
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void catchquit(int);
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int changeino(ino_t dir, const char *name, ino_t newnum);
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int check_cgmagic(int cg, struct bufarea *cgbp);
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int chkrange(ufs2_daddr_t blk, int cnt);
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void ckfini(int markclean);
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int ckinode(union dinode *dp, struct inodesc *);
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void clri(struct inodesc *, const char *type, int flag);
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int clearentry(struct inodesc *);
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void direrror(ino_t ino, const char *errmesg);
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int dirscan(struct inodesc *);
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int dofix(struct inodesc *, const char *msg);
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int eascan(struct inodesc *, struct ufs2_dinode *dp);
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void fileerror(ino_t cwd, ino_t ino, const char *errmesg);
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void finalIOstats(void);
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int findino(struct inodesc *);
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int findname(struct inodesc *);
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void flush(int fd, struct bufarea *bp);
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void freeblk(ufs2_daddr_t blkno, long frags);
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void freeino(ino_t ino);
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void freeinodebuf(void);
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void fsutilinit(void);
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int ftypeok(union dinode *dp);
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void getblk(struct bufarea *bp, ufs2_daddr_t blk, long size);
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struct bufarea *cgget(int cg);
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struct bufarea *getdatablk(ufs2_daddr_t blkno, long size, int type);
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struct inoinfo *getinoinfo(ino_t inumber);
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union dinode *getnextinode(ino_t inumber, int rebuildcg);
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void getpathname(char *namebuf, ino_t curdir, ino_t ino);
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union dinode *ginode(ino_t inumber);
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void infohandler(int sig);
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void alarmhandler(int sig);
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void inocleanup(void);
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void inodirty(void);
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struct inostat *inoinfo(ino_t inum);
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void IOstats(char *what);
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int linkup(ino_t orphan, ino_t parentdir, char *name);
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int makeentry(ino_t parent, ino_t ino, const char *name);
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void panic(const char *fmt, ...) __printflike(1, 2);
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void pass1(void);
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void pass1b(void);
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int pass1check(struct inodesc *);
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void pass2(void);
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void pass3(void);
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void pass4(void);
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int pass4check(struct inodesc *);
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void pass5(void);
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void pfatal(const char *fmt, ...) __printflike(1, 2);
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void pinode(ino_t ino);
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void propagate(void);
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void pwarn(const char *fmt, ...) __printflike(1, 2);
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int readsb(int listerr);
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int reply(const char *question);
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void rwerror(const char *mesg, ufs2_daddr_t blk);
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void sblock_init(void);
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void setinodebuf(ino_t);
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int setup(char *dev);
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void gjournal_check(const char *filesys);
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int suj_check(const char *filesys);
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void update_maps(struct cg *, struct cg*, int);
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void fsckinit(void);
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#endif /* !_FSCK_H_ */
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