f6aac1c3b5
Moving include/sys NetBSD headers to /sys/sys Moving include/arch/*/ NetBSD headers to /sys/arch/*/include Change-Id: Ia1a45d4e83ab806c84093ec2b61bdbea9bed65a0
242 lines
8.1 KiB
C
242 lines
8.1 KiB
C
/* $NetBSD: param.h,v 1.421 2012/10/13 17:54:40 dholland Exp $ */
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/*-
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)param.h 8.3 (Berkeley) 4/4/95
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*/
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#ifndef _SYS_PARAM_H_
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#define _SYS_PARAM_H_
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/*
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* Historic BSD #defines -- probably will remain untouched for all time.
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*/
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#define BSD 199506 /* System version (year & month). */
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#define BSD4_3 1
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#ifndef __minix
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#define BSD4_4 1
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#endif
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/*
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* #define __NetBSD_Version__ MMmmrrpp00
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*
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* M = major version
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* m = minor version; a minor number of 99 indicates current.
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* r = 0 (*)
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* p = patchlevel
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*
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* When new releases are made, src/gnu/usr.bin/groff/tmac/mdoc.local
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* needs to be updated and the changes sent back to the groff maintainers.
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*
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* (*) Up to 2.0I "release" used to be "",A-Z,Z[A-Z] but numeric
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* e.g. NetBSD-1.2D = 102040000 ('D' == 4)
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* NetBSD-2.0H (200080000) was changed on 20041001 to:
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* 2.99.9 (299000900)
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*/
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#define __NetBSD_Version__ 699001300 /* NetBSD 6.99.13 */
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#define __NetBSD_Prereq__(M,m,p) (((((M) * 100000000) + \
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(m) * 1000000) + (p) * 100) <= __NetBSD_Version__)
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/*
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* Historical NetBSD #define
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*
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* NetBSD 1.4 was the last release for which this value was incremented.
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* The value is now permanently fixed at 199905. It will never be
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* changed again.
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*
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* New code must use __NetBSD_Version__ instead, and should not even
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* count on NetBSD being defined.
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*
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*/
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#define NetBSD 199905 /* NetBSD version (year & month). */
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/*
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* There macros determine if we are running in protected mode or not.
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* _HARDKERNEL: code uses kernel namespace and runs in hw priviledged mode
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* _SOFTKERNEL: code uses kernel namespace but runs without hw priviledges
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*/
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#if defined(_KERNEL) && !defined(_RUMPKERNEL)
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#define _HARDKERNEL
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#endif
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#if defined(_KERNEL) && defined(_RUMPKERNEL)
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#define _SOFTKERNEL
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#endif
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#include <sys/null.h>
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#ifndef __ASSEMBLER__
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#include <sys/inttypes.h>
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#include <sys/types.h>
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/*
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* Machine-independent constants (some used in following include files).
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* Redefined constants are from POSIX 1003.1 limits file.
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*
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* MAXCOMLEN should be >= sizeof(ac_comm) (see <acct.h>)
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* MAXHOSTNAMELEN should be >= (_POSIX_HOST_NAME_MAX + 1) (see <limits.h>)
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* MAXLOGNAME should be >= UT_NAMESIZE (see <utmp.h>)
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*/
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#include <sys/syslimits.h>
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#define MAXCOMLEN 16 /* max command name remembered */
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#define MAXINTERP PATH_MAX /* max interpreter file name length */
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/* DEPRECATED: use LOGIN_NAME_MAX instead. */
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#define MAXLOGNAME (LOGIN_NAME_MAX - 1) /* max login name length */
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#ifndef __minix
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#define NCARGS ARG_MAX /* max bytes for an exec function */
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#endif
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#define NGROUPS NGROUPS_MAX /* max number groups */
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#define NOGROUP 65535 /* marker for empty group set member */
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#define MAXHOSTNAMELEN 256 /* max hostname size */
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#ifndef NOFILE
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#define NOFILE OPEN_MAX /* max open files per process */
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#endif
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#ifndef MAXUPRC /* max simultaneous processes */
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#define MAXUPRC CHILD_MAX /* POSIX 1003.1-compliant default */
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#else
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#if (MAXUPRC - 0) < CHILD_MAX
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#error MAXUPRC less than CHILD_MAX. See options(4) for details.
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#endif /* (MAXUPRC - 0) < CHILD_MAX */
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#endif /* !defined(MAXUPRC) */
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/* Signals. */
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#include <sys/signal.h>
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/* Machine type dependent parameters. */
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#include <machine/param.h>
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#include <machine/limits.h>
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/* pages ("clicks") to disk blocks */
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#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
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#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
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/* bytes to pages */
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#define ctob(x) ((x) << PGSHIFT)
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#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
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/* bytes to disk blocks */
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#define dbtob(x) ((x) << DEV_BSHIFT)
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#define btodb(x) ((x) >> DEV_BSHIFT)
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#ifndef COHERENCY_UNIT
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#define COHERENCY_UNIT 64
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#endif
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#ifndef CACHE_LINE_SIZE
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#define CACHE_LINE_SIZE 64
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#endif
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#ifndef MAXCPUS
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#define MAXCPUS 32
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#endif
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#ifndef MAX_LWP_PER_PROC
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#define MAX_LWP_PER_PROC 8000
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#endif
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/*
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* Miscellaneous.
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*/
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#define NBPW sizeof(int) /* number of bytes per word (integer) */
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#define CMASK 022 /* default file mask: S_IWGRP|S_IWOTH */
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#define NODEV (dev_t)(-1) /* non-existent device */
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#define CBLOCK 64 /* Clist block size, must be a power of 2. */
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#define CBQSIZE (CBLOCK/NBBY) /* Quote bytes/cblock - can do better. */
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/* Data chars/clist. */
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#define CBSIZE (CBLOCK - (int)sizeof(struct cblock *) - CBQSIZE)
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#define CROUND (CBLOCK - 1) /* Clist rounding. */
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/*
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* File system parameters and macros.
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*
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* The file system is made out of blocks of at most MAXBSIZE units, with
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* smaller units (fragments) only in the last direct block. MAXBSIZE
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* primarily determines the size of buffers in the buffer pool. It may be
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* made larger without any effect on existing file systems; however making
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* it smaller may make some file systems unmountable.
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*/
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#ifndef MAXBSIZE /* XXX */
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#define MAXBSIZE MAXPHYS
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#endif
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#define MAXFRAG 8
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/*
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* MAXPATHLEN defines the longest permissible path length after expanding
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* symbolic links. It is used to allocate a temporary buffer from the buffer
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* pool in which to do the name expansion, hence should be a power of two,
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* and must be less than or equal to MAXBSIZE. MAXSYMLINKS defines the
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* maximum number of symbolic links that may be expanded in a path name.
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* It should be set high enough to allow all legitimate uses, but halt
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* infinite loops reasonably quickly.
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*
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* MAXSYMLINKS should be >= _POSIX_SYMLOOP_MAX (see <limits.h>)
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*/
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#define MAXPATHLEN PATH_MAX
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#define MAXSYMLINKS 32
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/*
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* This is the maximum individual filename component length enforced by
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* namei. Filesystems cannot exceed this limit. The upper bound for that
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* limit is NAME_MAX. We don't bump it for now, for compatibility with
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* old binaries during the time where MAXPATHLEN was 511 and NAME_MAX was
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* 255
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*/
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#define KERNEL_NAME_MAX 255
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/* Bit map related macros. */
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#define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
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#define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
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#define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
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#define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
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/* Macros for counting and rounding. */
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#ifndef howmany
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#define howmany(x, y) (((x)+((y)-1))/(y))
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#endif
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#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
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#define rounddown(x,y) (((x)/(y))*(y))
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#define roundup2(x, m) (((x) + (m) - 1) & ~((m) - 1))
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#define powerof2(x) ((((x)-1)&(x))==0)
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/* Macros for min/max. */
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#define MIN(a,b) ((/*CONSTCOND*/(a)<(b))?(a):(b))
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#define MAX(a,b) ((/*CONSTCOND*/(a)>(b))?(a):(b))
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#endif /* !__ASSEMBLER__ */
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#endif /* !_SYS_PARAM_H_ */
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