1 /* 2 * Copyright (c) 2000-2019 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 <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/socket.h> 71 #include <sys/vnode_internal.h> 72 #include <sys/file_internal.h> 73 #include <sys/mbuf.h> 74 #include <sys/domain.h> 75 #include <sys/kernel.h> 76 #include <sys/quota.h> 77 #include <miscfs/fifofs/fifo.h> 78 #include <sys/shm_internal.h> 79 #include <sys/aio_kern.h> 80 81 struct timezone tz = { .tz_minuteswest = 0, .tz_dsttime = 0 }; 82 83 #if !defined(__x86_64__) 84 #define NPROC 1000 /* Account for TOTAL_CORPSES_ALLOWED by making this slightly lower than we can. */ 85 #define NPROC_PER_UID 950 86 #else 87 #define NPROC (20 + 32 * 32) 88 #define NPROC_PER_UID (NPROC/2) 89 #endif 90 91 /* NOTE: maxproc and hard_maxproc values are subject to device specific scaling in bsd_scale_setup */ 92 #define HNPROC 2500 /* based on thread_max */ 93 int maxproc = NPROC; 94 int maxprocperuid = NPROC_PER_UID; 95 96 #if !defined(__x86_64__) 97 int hard_maxproc = NPROC; /* hardcoded limit -- for ARM the number of processes is limited by the ASID space */ 98 #else 99 int hard_maxproc = HNPROC; /* hardcoded limit */ 100 #endif 101 102 int nprocs = 0; /* XXX */ 103 104 int desiredvnodes = 0; /* desiredvnodes is set explicitly in unix_startup.c */ 105 uint32_t kern_maxvnodes = 0; /* global, to be read from the device tree */ 106 107 #if __LP64__ 108 int maxfiles = 3 * OPEN_MAX; 109 #else 110 int maxfiles = OPEN_MAX + 2048; 111 #endif 112 113 unsigned int ncallout = 16 + 2 * NPROC; 114 unsigned int nmbclusters = NMBCLUSTERS; 115 int nport = NPROC / 2; 116 117 /* 118 * async IO (aio) configurable limits 119 */ 120 int aio_max_requests = CONFIG_AIO_MAX; 121 int aio_max_requests_per_process = CONFIG_AIO_PROCESS_MAX; 122 int aio_worker_threads = CONFIG_AIO_THREAD_COUNT; 123 124 struct buf *buf_headers; 125 struct domains_head domains = TAILQ_HEAD_INITIALIZER(domains); 126