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
81struct 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 */
93int maxproc = NPROC;
94int maxprocperuid = NPROC_PER_UID;
95
96#if !defined(__x86_64__)
97int hard_maxproc = NPROC; /* hardcoded limit -- for ARM the number of processes is limited by the ASID space */
98#else
99int hard_maxproc = HNPROC; /* hardcoded limit */
100#endif
101
102int nprocs = 0; /* XXX */
103
104int desiredvnodes = 0; /* desiredvnodes is set explicitly in unix_startup.c */
105uint32_t kern_maxvnodes = 0; /* global, to be read from the device tree */
106
107#if __LP64__
108int maxfiles = 3 * OPEN_MAX;
109#else
110int maxfiles = OPEN_MAX + 2048;
111#endif
112
113unsigned int ncallout = 16 + 2 * NPROC;
114unsigned int nmbclusters = NMBCLUSTERS;
115int nport = NPROC / 2;
116
117/*
118 * async IO (aio) configurable limits
119 */
120int aio_max_requests = CONFIG_AIO_MAX;
121int aio_max_requests_per_process = CONFIG_AIO_PROCESS_MAX;
122int aio_worker_threads = CONFIG_AIO_THREAD_COUNT;
123
124struct buf *buf_headers;
125struct domains_head domains = TAILQ_HEAD_INITIALIZER(domains);
126