1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
/*
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed for the FreeBSD Project by Marshall
* Kirk McKusick and Network Associates Laboratories, the Security
* Research Division of Network Associates, Inc. under DARPA/SPAWAR
* contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
* research program.
*
* Copyright (c) 1980, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <libufs.h>
/*
* The following two constants set the default block and fragment sizes.
* Both constants must be a power of 2 and meet the following constraints:
* MINBSIZE <= DESBLKSIZE <= MAXBSIZE
* sectorsize <= DESFRAGSIZE <= DESBLKSIZE
* DESBLKSIZE / DESFRAGSIZE <= 8
*/
#define DFL_FRAGSIZE 2048
#define DFL_BLKSIZE 16384
/*
* Cylinder groups may have up to MAXBLKSPERCG blocks. The actual
* number used depends upon how much information can be stored
* in a cylinder group map which must fit in a single file system
* block. The default is to use as many as possible blocks per group.
*/
#define MAXBLKSPERCG 0x7fffffff /* desired fs_fpg ("infinity") */
/*
* MAXBLKPG determines the maximum number of data blocks which are
* placed in a single cylinder group. The default is one indirect
* block worth of data blocks.
*/
#define MAXBLKPG(bsize) ((bsize) / sizeof(ufs2_daddr_t))
/*
* Each file system has a number of inodes statically allocated.
* We allocate one inode slot per NFPI fragments, expecting this
* to be far more than we will ever need.
*/
#define NFPI 4
/*
* variables set up by front end.
*/
extern int Eflag; /* Erase previous disk contents */
extern int Lflag; /* add a volume label */
extern int Nflag; /* run mkfs without writing file system */
extern int Oflag; /* build UFS1 format file system */
extern int Rflag; /* regression test */
extern int Uflag; /* enable soft updates for file system */
extern int Xflag; /* exit in middle of newfs for testing */
extern int Jflag; /* enable gjournal for file system */
extern int lflag; /* enable multilabel MAC for file system */
extern int nflag; /* do not create .snap directory */
extern intmax_t fssize; /* file system size */
extern int sectorsize; /* bytes/sector */
extern int realsectorsize; /* bytes/sector in hardware*/
extern int fsize; /* fragment size */
extern int bsize; /* block size */
extern int maxbsize; /* maximum clustering */
extern int maxblkspercg; /* maximum blocks per cylinder group */
extern int minfree; /* free space threshold */
extern int opt; /* optimization preference (space or time) */
extern int density; /* number of bytes per inode */
extern int maxcontig; /* max contiguous blocks to allocate */
extern int maxbpg; /* maximum blocks per file in a cyl group */
extern int avgfilesize; /* expected average file size */
extern int avgfilesperdir; /* expected number of files per directory */
extern u_char *volumelabel; /* volume label for filesystem */
extern struct uufsd disk; /* libufs disk structure */
/*
* To override a limitation in libufs, export the offset (in sectors) of the
* partition on the underlying media (file or disk). The value is used as
* an offset for all accesses to the media through bread(), which is only
* invoked directly in this program.
* For bwrite() we need a different approach, namely override the library
* version with one defined here. This is because bwrite() is called also
* by the library function sbwrite() which we cannot intercept nor want to
* rewrite. As a consequence, the internal version of bwrite() adds the
* partition offset itself when calling the underlying function, pwrite().
*
* XXX This info really ought to go into the struct uufsd, at which point
* we can remove the above hack.
*/
extern ufs2_daddr_t part_ofs; /* partition offset in blocks */
void mkfs (struct partition *, char *);
|
