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config.h revision 1.6 
      1 /*	$NetBSD: config.h,v 1.6 2001/07/13 20:30:19 perseant Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1991, 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  *	@(#)config.h	8.3 (Berkeley) 5/24/95
     36  */
     37 
     38 /*
     39  * Version of the LFS to make.  Default to the newest one.
     40  */
     41 #define DFL_VERSION LFS_VERSION
     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	512
     51 #define	DFL_BLKSIZE	8192
     52 
     53 /*
     54  * 1/DFL_MIN_FREE_SEGS gives the fraction of segments to be reserved for
     55  * the cleaner.
     56  */
     57 #define DFL_MIN_FREE_SEGS 20
     58 
     59 /*
     60  * MINFREE gives the minimum acceptable percentage of file system
     61  * blocks which may be free. If the freelist drops below this level
     62  * only the superuser may continue to allocate blocks.
     63  */
     64 #define MINFREE		10
     65 
     66 /*
     67  * The following constants set the default block and segment size for a log
     68  * structured file system.  The block size must be a power of two and less
     69  * than the segment size.
     70  */
     71 #define	LFS_MINSEGSIZE		(64 * 1024)
     72 #define	DFL_LFSSEG		(1024 * 1024)
     73 #define	DFL_LFSSEG_SHIFT	20
     74 #define	DFL_LFSSEG_MASK		0xFFFFF
     75 
     76 #define	LFS_MINBLOCKSIZE	512
     77 #define	DFL_LFSBLOCK		8192
     78 #define	DFL_LFSBLOCK_SHIFT	13
     79 #define	DFL_LFSBLOCK_MASK	0x1FFF
     80 
     81 #define DFL_LFSFRAG		1024
     82 #define DFL_LFS_FFMASK		0x3FF
     83 #define DFL_LFS_FFSHIFT		10
     84 #define DFL_LFS_FBMASK		0x7
     85 #define DFL_LFS_FBSHIFT		3
     86