bsd/conf/param.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1980, 1986, 1989, 1993
  27  *      The Regents of the University of California.  All rights reserved.
  28  * (c) UNIX System Laboratories, Inc.
  29  * All or some portions of this file are derived from material licensed
  30  * to the University of California by American Telephone and Telegraph
  31  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  32  * the permission of UNIX System Laboratories, Inc.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions
  36  * are met:
  37  * 1. Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
  39  * 2. Redistributions in binary form must reproduce the above copyright
  40  *    notice, this list of conditions and the following disclaimer in the
  41  *    documentation and/or other materials provided with the distribution.
  42  * 3. All advertising materials mentioning features or use of this software
  43  *    must display the following acknowledgement:
  44  *      This product includes software developed by the University of
  45  *      California, Berkeley and its contributors.
  46  * 4. Neither the name of the University nor the names of its contributors
  47  *    may be used to endorse or promote products derived from this software
  48  *    without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  51  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  54  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  55  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  56  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  57  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  58  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  59  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  60  * SUCH DAMAGE.
  61  *
  62  *      @(#)param.c     8.3 (Berkeley) 8/20/94
  63  */
  64
  65 #include <confdep.h>
  66 #include <sys/param.h>
  67 #include <sys/systm.h>
  68 #include <sys/socket.h>
  69 #include <sys/vnode.h>
  70 #include <sys/file.h>
  71 #include <sys/callout.h>
  72 #include <sys/clist.h>
  73 #include <sys/mbuf.h>
  74 #include <sys/domain.h>
  75 #include <sys/kernel.h>
  76 #include <sys/quota.h>
  77 #include <ufs/ufs/inode.h>
  78 #include <miscfs/fifofs/fifo.h>
  79 #include <sys/shm.h>
  80 #include <sys/aio_kern.h>
  81
  82 struct  timezone tz = { TIMEZONE, PST };
  83
  84 #define NPROC (20 + 16 * MAXUSERS)
  85 #define HNPROC (20 + 64 * MAXUSERS)
  86 int     maxproc = NPROC;
  87 __private_extern__ int hard_maxproc = HNPROC;   /* hardcoded limit */
  88 int nprocs = 0; /* XXX */
  89
  90 #define NTEXT (80 + NPROC / 8)                  /* actually the object cache */
  91 #define NVNODE (NPROC + NTEXT + 300)
  92 int     desiredvnodes = NVNODE + 700;
  93
  94 #define MAXFILES (OPEN_MAX + 2048)
  95 int     maxfiles = MAXFILES;
  96
  97 unsigned int    ncallout = 16 + 2*NPROC;
  98 int nmbclusters = NMBCLUSTERS;
  99 int     nport = NPROC / 2;
 100
 101 #define MAXSOCKETS NMBCLUSTERS
 102 int     maxsockets = MAXSOCKETS;
 103
 104 /*
 105  *  async IO (aio) configurable limits
 106  */
 107 #define AIO_MAX                         90      /* system wide limit of async IO requests */
 108 #define AIO_PROCESS_MAX         AIO_LISTIO_MAX  /* process limit of async IO requests */
 109 #define AIO_THREAD_COUNT        4       /* number of async IO worker threads created */
 110 int aio_max_requests = AIO_MAX;
 111 int aio_max_requests_per_process = AIO_PROCESS_MAX;
 112 int aio_worker_threads = AIO_THREAD_COUNT;
 113
 114 /*
 115  * These have to be allocated somewhere; allocating
 116  * them here forces loader errors if this file is omitted
 117  * (if they've been externed everywhere else; hah!).
 118  */
 119 struct  callout *callout;
 120 struct  cblock *cfree;
 121 struct  cblock *cfreelist = 0;
 122 int     cfreecount = 0;
 123 struct  buf *buf;
 124 struct  domain *domains;
 125