1/* 2 * Copyright (c) 2000-2008 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28/* 29 * Copyright (c) 1980, 1986, 1989, 1993 30 * The Regents of the University of California. All rights reserved. 31 * (c) UNIX System Laboratories, Inc. 32 * All or some portions of this file are derived from material licensed 33 * to the University of California by American Telephone and Telegraph 34 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 35 * the permission of UNIX System Laboratories, Inc. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by the University of 48 * California, Berkeley and its contributors. 49 * 4. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)param.c 8.3 (Berkeley) 8/20/94 66 */ 67 68#include <confdep.h> 69#include <sys/param.h> 70#include <sys/systm.h> 71#include <sys/socket.h> 72#include <sys/vnode_internal.h> 73#include <sys/file_internal.h> 74#include <sys/callout.h> 75#include <sys/clist.h> 76#include <sys/mbuf.h> 77#include <sys/domain.h> 78#include <sys/kernel.h> 79#include <sys/quota.h> 80#include <miscfs/fifofs/fifo.h> 81#include <sys/shm_internal.h> 82#include <sys/aio_kern.h> 83 84struct timezone tz = { TIMEZONE, PST }; 85 86#define NPROC (20 + 16 * MAXUSERS) 87#define HNPROC 2500 /* based on thread_max */ 88int maxproc = NPROC; 89int maxprocperuid = NPROC/2; 90/*__private_extern__*/ int hard_maxproc = HNPROC; /* hardcoded limit */ 91int nprocs = 0; /* XXX */ 92 93//#define NTEXT (80 + NPROC / 8) /* actually the object cache */ 94int desiredvnodes = 0; /* desiredvnodes is set explicitly in unix_startup.c */ 95uint32_t kern_maxvnodes = 0; /* global, to be read from the device tree */ 96 97#define MAXFILES (OPEN_MAX + 2048) 98int maxfiles = MAXFILES; 99 100unsigned int ncallout = 16 + 2*NPROC; 101unsigned int nmbclusters = NMBCLUSTERS; 102int nport = NPROC / 2; 103 104#define MAXSOCKETS NMBCLUSTERS 105int maxsockets = MAXSOCKETS; 106 107/* 108 * async IO (aio) configurable limits 109 */ 110int aio_max_requests = CONFIG_AIO_MAX; 111int aio_max_requests_per_process = CONFIG_AIO_PROCESS_MAX; 112int aio_worker_threads = CONFIG_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 */ 119struct callout *callout; 120struct cblock *cfree; 121struct cblock *cfreelist = NULL; 122int cfreecount = 0; 123struct buf *buf_headers; 124struct domains_head domains = TAILQ_HEAD_INITIALIZER(domains); 125