bsd/conf/param.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1980, 1986, 1989, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  * (c) UNIX System Laboratories, Inc.
  26  * All or some portions of this file are derived from material licensed
  27  * to the University of California by American Telephone and Telegraph
  28  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  29  * the permission of UNIX System Laboratories, Inc.
  30  *
  31  * Redistribution and use in source and binary forms, with or without
  32  * modification, are permitted provided that the following conditions
  33  * are met:
  34  * 1. Redistributions of source code must retain the above copyright
  35  *    notice, this list of conditions and the following disclaimer.
  36  * 2. Redistributions in binary form must reproduce the above copyright
  37  *    notice, this list of conditions and the following disclaimer in the
  38  *    documentation and/or other materials provided with the distribution.
  39  * 3. All advertising materials mentioning features or use of this software
  40  *    must display the following acknowledgement:
  41  *      This product includes software developed by the University of
  42  *      California, Berkeley and its contributors.
  43  * 4. Neither the name of the University nor the names of its contributors
  44  *    may be used to endorse or promote products derived from this software
  45  *    without specific prior written permission.
  46  *
  47  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  48  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  49  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  50  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  51  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  52  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  53  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  54  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  55  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  56  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  57  * SUCH DAMAGE.
  58  *
  59  *      @(#)param.c     8.3 (Berkeley) 8/20/94
  60  */
  61
  62 #include <confdep.h>
  63 #include <sys/param.h>
  64 #include <sys/systm.h>
  65 #include <sys/socket.h>
  66 #include <sys/vnode_internal.h>
  67 #include <sys/file_internal.h>
  68 #include <sys/callout.h>
  69 #include <sys/clist.h>
  70 #include <sys/mbuf.h>
  71 #include <sys/domain.h>
  72 #include <sys/kernel.h>
  73 #include <sys/quota.h>
  74 #include <ufs/ufs/inode.h>
  75 #include <miscfs/fifofs/fifo.h>
  76 #include <sys/shm_internal.h>
  77 #include <sys/aio_kern.h>
  78
  79 struct  timezone tz = { TIMEZONE, PST };
  80
  81 #define NPROC (20 + 16 * MAXUSERS)
  82 #define HNPROC (20 + 64 * MAXUSERS)
  83 int     maxproc = NPROC;
  84 __private_extern__ int hard_maxproc = HNPROC;   /* hardcoded limit */
  85 int nprocs = 0; /* XXX */
  86
  87 #define NTEXT (80 + NPROC / 8)                  /* actually the object cache */
  88 #define NVNODE (NPROC + NTEXT + 300)
  89 int     desiredvnodes = NVNODE + 700;
  90
  91 #define MAXFILES (OPEN_MAX + 2048)
  92 int     maxfiles = MAXFILES;
  93
  94 unsigned int    ncallout = 16 + 2*NPROC;
  95 int nmbclusters = NMBCLUSTERS;
  96 int     nport = NPROC / 2;
  97
  98 #define MAXSOCKETS NMBCLUSTERS
  99 int     maxsockets = MAXSOCKETS;
 100
 101 /*
 102  *  async IO (aio) configurable limits
 103  */
 104 #define AIO_MAX                         90      /* system wide limit of async IO requests */
 105 #define AIO_PROCESS_MAX         AIO_LISTIO_MAX  /* process limit of async IO requests */
 106 #define AIO_THREAD_COUNT        4       /* number of async IO worker threads created */
 107 int aio_max_requests = AIO_MAX;
 108 int aio_max_requests_per_process = AIO_PROCESS_MAX;
 109 int aio_worker_threads = AIO_THREAD_COUNT;
 110
 111 /*
 112  * These have to be allocated somewhere; allocating
 113  * them here forces loader errors if this file is omitted
 114  * (if they've been externed everywhere else; hah!).
 115  */
 116 struct  callout *callout;
 117 struct  cblock *cfree;
 118 struct  cblock *cfreelist = 0;
 119 int     cfreecount = 0;
 120 struct  buf *buf;
 121 struct  domain *domains;
 122