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Annotation of XNU/bsd/conf/param.c, revision 1.1

1.1     ! root        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: #import <confdep.h>
        !            63: #import <sys/param.h>
        !            64: #import <sys/systm.h>
        !            65: #import <sys/socket.h>
        !            66: #import <sys/vnode.h>
        !            67: #import <sys/file.h>
        !            68: #import <sys/callout.h>
        !            69: #import <sys/clist.h>
        !            70: #import <sys/mbuf.h>
        !            71: #import <sys/domain.h>
        !            72: #import <sys/kernel.h>
        !            73: #import <ufs/ufs/quota.h>
        !            74: #import <ufs/ufs/inode.h>
        !            75: #import <miscfs/fifofs/fifo.h>
        !            76: #import <sys/shm.h>
        !            77: 
        !            78: struct timezone tz = { TIMEZONE, PST };
        !            79: #define        NPROC (20 + 16 * MAXUSERS)
        !            80: int    maxproc = NPROC;
        !            81: int nprocs = 0; /* XXX */
        !            82: #define        NTEXT (80 + NPROC / 8)                  /* actually the object cache */
        !            83: #define        NVNODE (NPROC + NTEXT + 300)
        !            84: int    desiredvnodes = NVNODE + 350;
        !            85: int    maxfiles = 4 * (3 * (NPROC + MAXUSERS) + 80);
        !            86: unsigned int   ncallout = 16 + 2*NPROC;
        !            87: int nmbclusters = NMBCLUSTERS;
        !            88: int    nport = NPROC / 2;
        !            89: 
        !            90: #if MAXFILES > NMBCLUSTERS
        !            91: #define MAXSOCKETS MAXFILES
        !            92: #else
        !            93: #define MAXSOCKETS NMBCLUSTERS
        !            94: #endif
        !            95: 
        !            96: #define        SHMMAXPGS       1024            /* XXX until we have more kmap space */
        !            97: 
        !            98: #ifndef SHMMAX
        !            99: #define        SHMMAX  (SHMMAXPGS * 4096)
        !           100: #endif
        !           101: #ifndef SHMMIN
        !           102: #define        SHMMIN  1
        !           103: #endif
        !           104: #ifndef SHMMNI
        !           105: #define        SHMMNI  32                      /* <= SHMMMNI in shm.h */
        !           106: #endif
        !           107: #ifndef SHMSEG
        !           108: #define        SHMSEG  8
        !           109: #endif
        !           110: #ifndef SHMALL
        !           111: #define        SHMALL  (SHMMAXPGS)
        !           112: #endif
        !           113: 
        !           114: struct shminfo shminfo = {
        !           115:        SHMMAX,
        !           116:        SHMMIN,
        !           117:        SHMMNI,
        !           118:        SHMSEG,
        !           119:        SHMALL
        !           120: };
        !           121: 
        !           122: /*
        !           123:  * These have to be allocated somewhere; allocating
        !           124:  * them here forces loader errors if this file is omitted
        !           125:  * (if they've been externed everywhere else; hah!).
        !           126:  */
        !           127: struct         callout *callout;
        !           128: struct cblock *cfree;
        !           129: struct cblock *cfreelist = 0;
        !           130: int    cfreecount = 0;
        !           131: struct buf *buf;
        !           132: char   *buffers;
        !           133: struct domain *domains;
        !           134: int    maxsockets = MAXSOCKETS;

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