1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1980, 1986, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/param.h>
33 #include <ufs/ufs/dinode.h>
34 #include <ufs/ffs/fs.h>
35 #include <string.h>
36 #include "fsck.h"
37
38 long readcnt[BT_NUMBUFTYPES];
39 long totalreadcnt[BT_NUMBUFTYPES];
40 struct timespec readtime[BT_NUMBUFTYPES];
41 struct timespec totalreadtime[BT_NUMBUFTYPES];
42 struct timespec startprog;
43 struct bufarea sblk; /* file system superblock */
44 struct bufarea *pdirbp; /* current directory contents */
45 ino_t cursnapshot;
46 long dirhash, inplast;
47 unsigned long numdirs, listmax;
48 long countdirs; /* number of directories we actually found */
49 int adjrefcnt[MIBSIZE]; /* MIB cmd to adjust inode reference cnt */
50 int adjblkcnt[MIBSIZE]; /* MIB cmd to adjust inode block count */
51 int setsize[MIBSIZE]; /* MIB cmd to set inode size */
52 int adjndir[MIBSIZE]; /* MIB cmd to adjust number of directories */
53 int adjnbfree[MIBSIZE]; /* MIB cmd to adjust number of free blocks */
54 int adjnifree[MIBSIZE]; /* MIB cmd to adjust number of free inodes */
55 int adjnffree[MIBSIZE]; /* MIB cmd to adjust number of free frags */
56 int adjnumclusters[MIBSIZE]; /* MIB cmd to adjust number of free clusters */
57 int adjdepth[MIBSIZE]; /* MIB cmd to adjust directory depth count */
58 int freefiles[MIBSIZE]; /* MIB cmd to free a set of files */
59 int freedirs[MIBSIZE]; /* MIB cmd to free a set of directories */
60 int freeblks[MIBSIZE]; /* MIB cmd to free a set of data blocks */
61 struct fsck_cmd cmd; /* sysctl file system update commands */
62 char *cdevname; /* name of device being checked */
63 long dev_bsize; /* computed value of DEV_BSIZE */
64 long secsize; /* actual disk sector size */
65 u_int real_dev_bsize; /* actual disk sector size, not overridden */
66 char nflag; /* assume a no response */
67 char yflag; /* assume a yes response */
68 int bkgrdflag; /* use a snapshot to run on an active system */
69 off_t bflag; /* location of alternate super block */
70 int debug; /* output debugging info */
71 int Eflag; /* delete empty data blocks */
72 int Zflag; /* zero empty data blocks */
73 int zflag; /* zero unused directory space */
74 int inoopt; /* trim out unused inodes */
75 char ckclean; /* only do work if not cleanly unmounted */
76 int cvtlevel; /* convert to newer file system format */
77 int ckhashadd; /* check hashes to be added */
78 int bkgrdcheck; /* determine if background check is possible */
79 int bkgrdsumadj; /* kernel able to adjust superblock summary */
80 char usedsoftdep; /* just fix soft dependency inconsistencies */
81 char preen; /* just fix normal inconsistencies */
82 char rerun; /* rerun fsck. Only used in non-preen mode */
83 int returntosingle; /* 1 => return to single user mode on exit */
84 char resolved; /* cleared if unresolved changes => not clean */
85 char havesb; /* superblock has been read */
86 char skipclean; /* skip clean file systems if preening */
87 int fsmodified; /* 1 => write done to file system */
88 int fsreadfd; /* file descriptor for reading file system */
89 int fswritefd; /* file descriptor for writing file system */
90 int surrender; /* Give up if reads fail */
91 int wantrestart; /* Restart fsck on early termination */
92 ufs2_daddr_t maxfsblock; /* number of blocks in the file system */
93 char *blockmap; /* ptr to primary blk allocation map */
94 ino_t maxino; /* number of inodes in file system */
95 ino_t lfdir; /* lost & found directory inode number */
96 const char *lfname; /* lost & found directory name */
97 int lfmode; /* lost & found directory creation mode */
98 ufs2_daddr_t n_blks; /* number of blocks in use */
99 int cgheader_corrupt; /* one or more CG headers are corrupt */
100 ino_t n_files; /* number of files in use */
101 volatile sig_atomic_t got_siginfo; /* received a SIGINFO */
102 volatile sig_atomic_t got_sigalarm; /* received a SIGALRM */
103 union dinode zino;
104
105 struct dups *duplist;
106 struct dups *muldup;
107 struct inostatlist *inostathead;
108
109 void
fsckinit(void)110 fsckinit(void)
111 {
112 bzero(readcnt, sizeof(long) * BT_NUMBUFTYPES);
113 bzero(totalreadcnt, sizeof(long) * BT_NUMBUFTYPES);
114 bzero(readtime, sizeof(struct timespec) * BT_NUMBUFTYPES);
115 bzero(totalreadtime, sizeof(struct timespec) * BT_NUMBUFTYPES);
116 bzero(&startprog, sizeof(struct timespec));
117 bzero(&sblk, sizeof(struct bufarea));
118 cursnapshot = 0;
119 listmax = numdirs = dirhash = inplast = 0;
120 countdirs = 0;
121 bzero(adjrefcnt, sizeof(int) * MIBSIZE);
122 bzero(adjblkcnt, sizeof(int) * MIBSIZE);
123 bzero(setsize, sizeof(int) * MIBSIZE);
124 bzero(adjndir, sizeof(int) * MIBSIZE);
125 bzero(adjnbfree, sizeof(int) * MIBSIZE);
126 bzero(adjnifree, sizeof(int) * MIBSIZE);
127 bzero(adjnffree, sizeof(int) * MIBSIZE);
128 bzero(adjnumclusters, sizeof(int) * MIBSIZE);
129 bzero(adjdepth, sizeof(int) * MIBSIZE);
130 bzero(freefiles, sizeof(int) * MIBSIZE);
131 bzero(freedirs, sizeof(int) * MIBSIZE);
132 bzero(freeblks, sizeof(int) * MIBSIZE);
133 bzero(&cmd, sizeof(struct fsck_cmd));
134 cdevname = NULL;
135 dev_bsize = 0;
136 secsize = 0;
137 real_dev_bsize = 0;
138 bkgrdsumadj = 0;
139 usedsoftdep = 0;
140 rerun = 0;
141 returntosingle = 0;
142 resolved = 0;
143 havesb = 0;
144 fsmodified = 0;
145 fsreadfd = -1;
146 fswritefd = -1;
147 maxfsblock = 0;
148 maxino = 0;
149 lfdir = 0;
150 lfname = "lost+found";
151 lfmode = 0700;
152 n_blks = 0;
153 n_files = 0;
154 cgheader_corrupt = 0;
155 got_siginfo = 0;
156 got_sigalarm = 0;
157 bzero(&zino.dp1, sizeof(struct ufs1_dinode));
158 bzero(&zino.dp2, sizeof(struct ufs2_dinode));
159 }
160