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/* $OpenBSD: param.c,v 1.29 2008/03/20 22:25:29 deraadt Exp $ */
/* $NetBSD: param.c,v 1.16 1996/03/12 03:08:40 mrg Exp $ */
/*
* Copyright (c) 1980, 1986, 1989 Regents of the University of California.
* All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)param.c 7.20 (Berkeley) 6/27/91
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/timeout.h>
#include <sys/mbuf.h>
#include <ufs/ufs/quota.h>
#include <sys/kernel.h>
#include <sys/utsname.h>
#ifdef SYSVSHM
#include <machine/vmparam.h>
#include <sys/shm.h>
#endif
#ifdef SYSVSEM
#include <sys/sem.h>
#endif
#ifdef SYSVMSG
#include <sys/msg.h>
#endif
/*
* System parameter formulae.
*
* This file is copied into each directory where we compile
* the kernel; it should be modified there to suit local taste
* if necessary.
*
* Compiled with -DHZ=xx -DTIMEZONE=x -DDST=x -DMAXUSERS=xx
*/
#ifndef TIMEZONE
# define TIMEZONE 0
#endif
#ifndef DST
# define DST 0
#endif
#ifndef HZ
#define HZ 100
#endif
int hz = HZ;
int tick = 1000000 / HZ;
int tickadj = 240000 / (60 * HZ); /* can adjust 240ms in 60s */
struct timezone tz = { TIMEZONE, DST };
#define NPROC (30 + 16 * MAXUSERS)
#define NTEXT (80 + NPROC / 8) /* actually the object cache */
#define NVNODE (NPROC * 2 + NTEXT + 100)
int desiredvnodes = NVNODE;
int maxproc = NPROC;
int maxfiles = 5 * (NPROC + MAXUSERS) + 80;
int nmbclust = NMBCLUSTERS;
#ifndef MBLOWAT
#define MBLOWAT 16
#endif
int mblowat = MBLOWAT;
#ifndef MCLLOWAT
#define MCLLOWAT 8
#endif
int mcllowat = MCLLOWAT;
int fscale = FSCALE; /* kernel uses `FSCALE', user uses `fscale' */
int shmseg = 8;
int shmmaxpgs = SHMMAXPGS;
/*
* Values in support of System V compatible shared memory. XXX
*/
#ifdef SYSVSHM
#define SHMMAX SHMMAXPGS /* shminit() performs a `*= PAGE_SIZE' */
#define SHMMIN 1
#define SHMMNI 128 /* <64k, see IPCID_TO_IX in ipc.h */
#define SHMSEG 128
#define SHMALL (SHMMAXPGS)
struct shminfo shminfo = {
SHMMAX,
SHMMIN,
SHMMNI,
SHMSEG,
SHMALL
};
#endif
/*
* Values in support of System V compatible semaphores.
*/
#ifdef SYSVSEM
struct seminfo seminfo = {
SEMMNI, /* # of semaphore identifiers */
SEMMNS, /* # of semaphores in system */
SEMMNU, /* # of undo structures in system */
SEMMSL, /* max # of semaphores per id */
SEMOPM, /* max # of operations per semop call */
SEMUME, /* max # of undo entries per process */
SEMUSZ, /* size in bytes of undo structure */
SEMVMX, /* semaphore maximum value */
SEMAEM /* adjust on exit max value */
};
#endif
/*
* Values in support of System V compatible messages.
*/
#ifdef SYSVMSG
struct msginfo msginfo = {
MSGMAX, /* max chars in a message */
MSGMNI, /* # of message queue identifiers */
MSGMNB, /* max chars in a queue */
MSGTQL, /* max messages in system */
MSGSSZ, /* size of a message segment */
/* (must be small power of 2 greater than 4) */
MSGSEG /* number of message segments */
};
#endif
/*
* This has to be allocated somewhere; allocating
* them here forces loader errors if this file is omitted
* (if they've been externed everywhere else; hah!).
*/
struct utsname utsname;
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