sbin/newfs_lfs/config.h

   1 /*      $NetBSD: config.h,v 1.7 2003/08/07 10:04:34 agc 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. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      @(#)config.h    8.3 (Berkeley) 5/24/95
  32  */
  33
  34 /*
  35  * Version of the LFS to make.  Default to the newest one.
  36  */
  37 #define DFL_VERSION LFS_VERSION
  38
  39 /*
  40  * 1/DFL_MIN_FREE_SEGS gives the fraction of segments to be reserved for
  41  * the cleaner.
  42  */
  43 #define DFL_MIN_FREE_SEGS 20
  44
  45 /*
  46  * MINFREE gives the minimum acceptable percentage of file system
  47  * blocks which may be free. If the freelist drops below this level
  48  * only the superuser may continue to allocate blocks.
  49  */
  50 #define MINFREE         10
  51
  52 /*
  53  * The following constants set the default block and segment size for a log
  54  * structured file system.  The block size must be a power of two and less
  55  * than the segment size.
  56  */
  57 #define LFS_MINSEGSIZE          (64 * 1024)
  58 #define DFL_LFSSEG              (1024 * 1024)
  59 #define DFL_LFSSEG_SHIFT        20
  60 #define DFL_LFSSEG_MASK         0xFFFFF
  61
  62 #define LFS_MINBLOCKSIZE        512
  63 #define DFL_LFSBLOCK            8192
  64 #define DFL_LFSBLOCK_SHIFT      13
  65 #define DFL_LFSBLOCK_MASK       0x1FFF
  66
  67 #define DFL_LFSFRAG             1024
  68 #define DFL_LFS_FFMASK          0x3FF
  69 #define DFL_LFS_FFSHIFT         10
  70 #define DFL_LFS_FBMASK          0x7
  71 #define DFL_LFS_FBSHIFT         3