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