1/*
2 * Copyright (c) 2002 Networks Associates Technology, Inc.
3 * All rights reserved.
4 *
5 * This software was developed for the FreeBSD Project by Marshall
6 * Kirk McKusick and Network Associates Laboratories, the Security
7 * Research Division of Network Associates, Inc. under DARPA/SPAWAR
8 * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
9 * research program.
10 *
11 * Copyright (c) 1980, 1989, 1993
12 *	The Regents of the University of California.  All rights reserved.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 *    notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 *    notice, this list of conditions and the following disclaimer in the
21 *    documentation and/or other materials provided with the distribution.
22 * 4. Neither the name of the University nor the names of its contributors
23 *    may be used to endorse or promote products derived from this software
24 *    without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * SUCH DAMAGE.
37 *
38 * $FreeBSD$
39 */
40
41#include <libufs.h>
42
43/*
44 * The following two constants set the default block and fragment sizes.
45 * Both constants must be a power of 2 and meet the following constraints:
46 *	MINBSIZE <= DESBLKSIZE <= MAXBSIZE
47 *	sectorsize <= DESFRAGSIZE <= DESBLKSIZE
48 *	DESBLKSIZE / DESFRAGSIZE <= 8
49 */
50#define	DFL_FRAGSIZE	4096
51#define	DFL_BLKSIZE	32768
52
53/*
54 * Cylinder groups may have up to MAXBLKSPERCG blocks. The actual
55 * number used depends upon how much information can be stored
56 * in a cylinder group map which must fit in a single file system
57 * block. The default is to use as many as possible blocks per group.
58 */
59#define	MAXBLKSPERCG	0x7fffffff	/* desired fs_fpg ("infinity") */
60
61/*
62 * MAXBLKPG determines the maximum number of data blocks which are
63 * placed in a single cylinder group. The default is one indirect
64 * block worth of data blocks.
65 */
66#define MAXBLKPG(bsize)	((bsize) / sizeof(ufs2_daddr_t))
67
68/*
69 * Each file system has a number of inodes statically allocated.
70 * We allocate one inode slot per NFPI fragments, expecting this
71 * to be far more than we will ever need.
72 */
73#define	NFPI		2
74
75/*
76 * variables set up by front end.
77 */
78extern int	Eflag;		/* Erase previous disk contents */
79extern int	Lflag;		/* add a volume label */
80extern int	Nflag;		/* run mkfs without writing file system */
81extern int	Oflag;		/* build UFS1 format file system */
82extern int	Rflag;		/* regression test */
83extern int	Uflag;		/* enable soft updates for file system */
84extern int	jflag;		/* enable soft updates journaling for filesys */
85extern int	Xflag;		/* exit in middle of newfs for testing */
86extern int	Jflag;		/* enable gjournal for file system */
87extern int	lflag;		/* enable multilabel MAC for file system */
88extern int	nflag;		/* do not create .snap directory */
89extern int	tflag;		/* enable TRIM */
90extern intmax_t	fssize;		/* file system size */
91extern off_t	mediasize;	/* device size */
92extern int	sectorsize;	/* bytes/sector */
93extern int	realsectorsize;	/* bytes/sector in hardware*/
94extern int	fsize;		/* fragment size */
95extern int	bsize;		/* block size */
96extern int	maxbsize;	/* maximum clustering */
97extern int	maxblkspercg;	/* maximum blocks per cylinder group */
98extern int	minfree;	/* free space threshold */
99extern int	metaspace;	/* space held for metadata blocks */
100extern int	opt;		/* optimization preference (space or time) */
101extern int	density;	/* number of bytes per inode */
102extern int	maxcontig;	/* max contiguous blocks to allocate */
103extern int	maxbpg;		/* maximum blocks per file in a cyl group */
104extern int	avgfilesize;	/* expected average file size */
105extern int	avgfilesperdir;	/* expected number of files per directory */
106extern u_char	*volumelabel;	/* volume label for filesystem */
107extern struct uufsd disk;	/* libufs disk structure */
108
109/*
110 * To override a limitation in libufs, export the offset (in sectors) of the
111 * partition on the underlying media (file or disk). The value is used as
112 * an offset for all accesses to the media through bread(), which is only
113 * invoked directly in this program.
114 * For bwrite() we need a different approach, namely override the library
115 * version with one defined here. This is because bwrite() is called also
116 * by the library function sbwrite() which we cannot intercept nor want to
117 * rewrite. As a consequence, the internal version of bwrite() adds the
118 * partition offset itself when calling the underlying function, pwrite().
119 *
120 * XXX This info really ought to go into the struct uufsd, at which point
121 * we can remove the above hack.
122 */
123extern ufs2_daddr_t part_ofs;	/* partition offset in blocks */
124
125void mkfs (struct partition *, char *);
126