2 * Copyright (c) 2002 Networks Associates Technology, Inc.
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
11 * Copyright (c) 1980, 1989, 1993
12 * The Regents of the University of California. All rights reserved.
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15 * modification, are permitted provided that the following conditions
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.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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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
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
50 #define DFL_FRAGSIZE 4096
51 #define DFL_BLKSIZE 32768
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.
59 #define MAXBLKSPERCG 0x7fffffff /* desired fs_fpg ("infinity") */
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.
66 #define MAXBLKPG(bsize) ((bsize) / sizeof(ufs2_daddr_t))
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.
76 * variables set up by front end.
78 extern int Eflag; /* Erase previous disk contents */
79 extern int Lflag; /* add a volume label */
80 extern int Nflag; /* run mkfs without writing file system */
81 extern int Oflag; /* build UFS1 format file system */
82 extern int Rflag; /* regression test */
83 extern int Uflag; /* enable soft updates for file system */
84 extern int jflag; /* enable soft updates journaling for filesys */
85 extern int Xflag; /* exit in middle of newfs for testing */
86 extern int Jflag; /* enable gjournal for file system */
87 extern int lflag; /* enable multilabel MAC for file system */
88 extern int nflag; /* do not create .snap directory */
89 extern int tflag; /* enable TRIM */
90 extern intmax_t fssize; /* file system size */
91 extern off_t mediasize; /* device size */
92 extern int sectorsize; /* bytes/sector */
93 extern int realsectorsize; /* bytes/sector in hardware*/
94 extern int fsize; /* fragment size */
95 extern int bsize; /* block size */
96 extern int maxbsize; /* maximum clustering */
97 extern int maxblkspercg; /* maximum blocks per cylinder group */
98 extern int minfree; /* free space threshold */
99 extern int opt; /* optimization preference (space or time) */
100 extern int density; /* number of bytes per inode */
101 extern int maxcontig; /* max contiguous blocks to allocate */
102 extern int maxbpg; /* maximum blocks per file in a cyl group */
103 extern int avgfilesize; /* expected average file size */
104 extern int avgfilesperdir; /* expected number of files per directory */
105 extern u_char *volumelabel; /* volume label for filesystem */
106 extern struct uufsd disk; /* libufs disk structure */
109 * To override a limitation in libufs, export the offset (in sectors) of the
110 * partition on the underlying media (file or disk). The value is used as
111 * an offset for all accesses to the media through bread(), which is only
112 * invoked directly in this program.
113 * For bwrite() we need a different approach, namely override the library
114 * version with one defined here. This is because bwrite() is called also
115 * by the library function sbwrite() which we cannot intercept nor want to
116 * rewrite. As a consequence, the internal version of bwrite() adds the
117 * partition offset itself when calling the underlying function, pwrite().
119 * XXX This info really ought to go into the struct uufsd, at which point
120 * we can remove the above hack.
122 extern ufs2_daddr_t part_ofs; /* partition offset in blocks */
124 void mkfs (struct partition *, char *);