xref: /illumos-gate/usr/src/uts/common/sys/param.h (revision 3c4c5929)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5ae115bc7Smrj  * Common Development and Distribution License (the "License").
6ae115bc7Smrj  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
2189621fe1SMarcel Telka 
227c478bd9Sstevel@tonic-gate /*
2389621fe1SMarcel Telka  * Copyright 2014 Nexenta Systems, Inc.  All rights reserved.
24cb15d5d9SPeter Rival  * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
257c478bd9Sstevel@tonic-gate  */
277c478bd9Sstevel@tonic-gate /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
28b4203d75SMarcel Telka /*	  All Rights Reserved	*/
307c478bd9Sstevel@tonic-gate /*
317c478bd9Sstevel@tonic-gate  * University Copyright- Copyright (c) 1982, 1986, 1988
327c478bd9Sstevel@tonic-gate  * The Regents of the University of California
337c478bd9Sstevel@tonic-gate  * All Rights Reserved
347c478bd9Sstevel@tonic-gate  *
357c478bd9Sstevel@tonic-gate  * University Acknowledgment- Portions of this document are derived from
367c478bd9Sstevel@tonic-gate  * software developed by the University of California, Berkeley, and its
377c478bd9Sstevel@tonic-gate  * contributors.
387c478bd9Sstevel@tonic-gate  */
407c478bd9Sstevel@tonic-gate #ifndef _SYS_PARAM_H
417c478bd9Sstevel@tonic-gate #define	_SYS_PARAM_H
437c478bd9Sstevel@tonic-gate #ifndef _ASM		/* Avoid typedef headaches for assembly files */
447c478bd9Sstevel@tonic-gate #include <sys/types.h>
457c478bd9Sstevel@tonic-gate #include <sys/isa_defs.h>
467c478bd9Sstevel@tonic-gate #endif /* _ASM */
484870e0a7SRichard PALO #include <sys/null.h>
507c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
517c478bd9Sstevel@tonic-gate extern "C" {
527c478bd9Sstevel@tonic-gate #endif
547c478bd9Sstevel@tonic-gate /*
557c478bd9Sstevel@tonic-gate  * Fundamental variables; don't change too often.
567c478bd9Sstevel@tonic-gate  */
587c478bd9Sstevel@tonic-gate /*
597c478bd9Sstevel@tonic-gate  * _POSIX_VDISABLE has historically been defined in <sys/param.h> since
607c478bd9Sstevel@tonic-gate  * an early merge with AT&T source.  It has also historically been defined
617c478bd9Sstevel@tonic-gate  * in <sys/termios.h>. The POSIX standard, IEEE Std. 1003.1-1988 initially
627c478bd9Sstevel@tonic-gate  * required the existence of _POSIX_VDISABLE in <sys/termios.h>.
637c478bd9Sstevel@tonic-gate  * Subsequent versions of the IEEE Standard as well as the X/Open
647c478bd9Sstevel@tonic-gate  * specifications required that _POSIX_VDISABLE be defined in <unistd.h>
657c478bd9Sstevel@tonic-gate  * while still allowing for it's existence in other headers.  With the
667c478bd9Sstevel@tonic-gate  * introduction of XPG6, _POSIX_VDISABLE can only be defined in <unistd.h>.
677c478bd9Sstevel@tonic-gate  */
687c478bd9Sstevel@tonic-gate #if !defined(_XPG6) || defined(__EXTENSIONS__)
697c478bd9Sstevel@tonic-gate #ifndef	_POSIX_VDISABLE
707c478bd9Sstevel@tonic-gate #define	_POSIX_VDISABLE 0	/* Disable special character functions */
717c478bd9Sstevel@tonic-gate #endif
727c478bd9Sstevel@tonic-gate #endif /* !defined(_XPG6) || defined(__EXTENSIONS__) */
742463e920SRichard Lowe /* The actual size of the TTY input queue */
752463e920SRichard Lowe #define	_TTY_BUFSIZ	2048
762463e920SRichard Lowe 
772463e920SRichard Lowe /*
782463e920SRichard Lowe  * These defines all have their historical value.  The actual size of the tty
792463e920SRichard Lowe  * buffer both for the line-editor in ldterm, and in general, is above as
802463e920SRichard Lowe  * _TTY_BUFSIZ.
812463e920SRichard Lowe  *
822463e920SRichard Lowe  * We leave these defines at their historical value to match the behaviour of
832463e920SRichard Lowe  * BSD and Linux.
842463e920SRichard Lowe  */
857c478bd9Sstevel@tonic-gate #ifndef	MAX_INPUT
867c478bd9Sstevel@tonic-gate #define	MAX_INPUT	512	/* Maximum bytes stored in the input queue */
877c478bd9Sstevel@tonic-gate #endif
887c478bd9Sstevel@tonic-gate #ifndef	MAX_CANON
897c478bd9Sstevel@tonic-gate #define	MAX_CANON	256	/* Maximum bytes for canonical processing */
907c478bd9Sstevel@tonic-gate #endif
912463e920SRichard Lowe #define	CANBSIZ		256	/* max size of typewriter line	*/
922463e920SRichard Lowe 
947c478bd9Sstevel@tonic-gate #define	UID_NOBODY	60001	/* user ID no body */
957c478bd9Sstevel@tonic-gate #define	GID_NOBODY	UID_NOBODY
96e913d9ecSLisa Week #define	UID_UNKNOWN	96
97e913d9ecSLisa Week #define	GID_UNKNOWN	UID_UNKNOWN
98b9e076dcSyz #define	UID_DLADM	15
996ba597c5SAnurag S. Maskey #define	UID_NETADM	16
1006ba597c5SAnurag S. Maskey #define	GID_NETADM	65
1017c478bd9Sstevel@tonic-gate #define	UID_NOACCESS	60002	/* user ID no access */
1037c478bd9Sstevel@tonic-gate #ifdef _KERNEL
1047c478bd9Sstevel@tonic-gate #define	MAX_TASKID	999999
1057c478bd9Sstevel@tonic-gate #define	MAX_MAXPID	999999
106f48205beScasper #define	MAXEPHUID	0xfffffffcu	/* max ephemeral user id */
10735a5a358SJonathan Adams 
10835a5a358SJonathan Adams #define	FAMOUS_PID_SCHED	0
10935a5a358SJonathan Adams #define	FAMOUS_PID_INIT		1
11035a5a358SJonathan Adams #define	FAMOUS_PID_PAGEOUT	2
11135a5a358SJonathan Adams #define	FAMOUS_PID_FSFLUSH	3
11235a5a358SJonathan Adams #define	FAMOUS_PIDS		4
1137c478bd9Sstevel@tonic-gate #endif
1157c478bd9Sstevel@tonic-gate #ifdef DEBUG
1167c478bd9Sstevel@tonic-gate #define	DEFAULT_MAXPID	999999
1177c478bd9Sstevel@tonic-gate #define	DEFAULT_JUMPPID	100000
1187c478bd9Sstevel@tonic-gate #else
1197c478bd9Sstevel@tonic-gate #define	DEFAULT_MAXPID	30000
1207c478bd9Sstevel@tonic-gate #define	DEFAULT_JUMPPID	0
1217c478bd9Sstevel@tonic-gate #endif
1237c478bd9Sstevel@tonic-gate #define	MAXUID		2147483647	/* max user id */
1257c478bd9Sstevel@tonic-gate #define	MAXPROJID	MAXUID		/* max project id */
1267c478bd9Sstevel@tonic-gate #define	MAXLINK		32767	/* max links */
128f48205beScasper #define	MINEPHUID	0x80000000u	/* min ephemeral user id */
1307c478bd9Sstevel@tonic-gate #define	NMOUNT		40	/* est. of # mountable fs for quota calc */
1327c478bd9Sstevel@tonic-gate #define	NOFILE		20	/* this define is here for	*/
1337c478bd9Sstevel@tonic-gate 				/* compatibility purposes only	*/
1347c478bd9Sstevel@tonic-gate 				/* and will be removed in a	*/
1357c478bd9Sstevel@tonic-gate 				/* later release		*/
1377c478bd9Sstevel@tonic-gate /*
1387c478bd9Sstevel@tonic-gate  * These define the maximum and minimum allowable values of the
1397c478bd9Sstevel@tonic-gate  * configurable parameter NGROUPS_MAX.
1407c478bd9Sstevel@tonic-gate  */
1417c478bd9Sstevel@tonic-gate #define	NGROUPS_UMIN	0
14267dbe2beSCasper H.S. Dik #define	NGROUPS_UMAX	1024
14367dbe2beSCasper H.S. Dik #define	NGROUPS_OLDMAX	32
1457c478bd9Sstevel@tonic-gate /*
1467c478bd9Sstevel@tonic-gate  * NGROUPS_MAX_DEFAULT: *MUST* match NGROUPS_MAX value in limits.h.
1477c478bd9Sstevel@tonic-gate  */
1487c478bd9Sstevel@tonic-gate #define	NGROUPS_MAX_DEFAULT	16
1507c478bd9Sstevel@tonic-gate /*
1517c478bd9Sstevel@tonic-gate  * Default process priority.  Keep it in sync with limits.h.
1527c478bd9Sstevel@tonic-gate  */
1537c478bd9Sstevel@tonic-gate #define	NZERO	20
1557c478bd9Sstevel@tonic-gate /*
1567c478bd9Sstevel@tonic-gate  * Fundamental constants of the implementation--cannot be changed easily.
1577c478bd9Sstevel@tonic-gate  */
159*3c4c5929SGordon Ross #if !defined(_ASM)
1607c478bd9Sstevel@tonic-gate #define	NBPW	sizeof (int)	/* number of bytes in an integer */
161*3c4c5929SGordon Ross #endif	/* _ASM */
1637c478bd9Sstevel@tonic-gate #define	CMASK	022		/* default mask for file creation */
1647c478bd9Sstevel@tonic-gate #define	CDLIMIT	(1L<<11)	/* default max write address */
1657c478bd9Sstevel@tonic-gate #define	NBPS		0x20000	/* Number of bytes per segment */
1667c478bd9Sstevel@tonic-gate #define	NBPSCTR		512	/* Bytes per disk sector.	*/
1677c478bd9Sstevel@tonic-gate #define	UBSIZE		512	/* unix block size.		*/
1687c478bd9Sstevel@tonic-gate #define	SCTRSHFT	9	/* Shift for BPSECT.		*/
1707c478bd9Sstevel@tonic-gate #ifdef _LITTLE_ENDIAN
1717c478bd9Sstevel@tonic-gate #define	lobyte(X)	(((unsigned char *)&(X))[0])
1727c478bd9Sstevel@tonic-gate #define	hibyte(X)	(((unsigned char *)&(X))[1])
1737c478bd9Sstevel@tonic-gate #define	loword(X)	(((ushort_t *)&(X))[0])
1747c478bd9Sstevel@tonic-gate #define	hiword(X)	(((ushort_t *)&(X))[1])
1757c478bd9Sstevel@tonic-gate #endif
1767c478bd9Sstevel@tonic-gate #ifdef _BIG_ENDIAN
1777c478bd9Sstevel@tonic-gate #define	lobyte(X)	(((unsigned char *)&(X))[1])
1787c478bd9Sstevel@tonic-gate #define	hibyte(X)	(((unsigned char *)&(X))[0])
1797c478bd9Sstevel@tonic-gate #define	loword(X)	(((ushort_t *)&(X))[1])
1807c478bd9Sstevel@tonic-gate #define	hiword(X)	(((ushort_t *)&(X))[0])
1817c478bd9Sstevel@tonic-gate #endif
1837c478bd9Sstevel@tonic-gate /* REMOTE -- whether machine is primary, secondary, or regular */
1847c478bd9Sstevel@tonic-gate #define	SYSNAME 9		/* # chars in system name */
1857c478bd9Sstevel@tonic-gate #define	PREMOTE 39
1877c478bd9Sstevel@tonic-gate /*
1887c478bd9Sstevel@tonic-gate  * MAXPATHLEN defines the longest permissible path length,
1897c478bd9Sstevel@tonic-gate  * including the terminating null, after expanding symbolic links.
1907c478bd9Sstevel@tonic-gate  * TYPICALMAXPATHLEN is used in a few places as an optimization
1917c478bd9Sstevel@tonic-gate  * with a local buffer on the stack to avoid kmem_alloc().
1927c478bd9Sstevel@tonic-gate  * MAXSYMLINKS defines the maximum number of symbolic links
1937c478bd9Sstevel@tonic-gate  * that may be expanded in a path name. It should be set high
1947c478bd9Sstevel@tonic-gate  * enough to allow all legitimate uses, but halt infinite loops
1957c478bd9Sstevel@tonic-gate  * reasonably quickly.
1967c478bd9Sstevel@tonic-gate  * MAXNAMELEN is the length (including the terminating null) of
1977c478bd9Sstevel@tonic-gate  * the longest permissible file (component) name.
1987c478bd9Sstevel@tonic-gate  */
1997c478bd9Sstevel@tonic-gate #define	MAXPATHLEN	1024
2007c478bd9Sstevel@tonic-gate #define	TYPICALMAXPATHLEN	64
2017c478bd9Sstevel@tonic-gate #define	MAXSYMLINKS	20
2027c478bd9Sstevel@tonic-gate #define	MAXNAMELEN	256
204d62bc4baSyz /*
205d62bc4baSyz  * MAXLINKNAMELEN defines the longest possible permitted datalink name,
206d62bc4baSyz  * including the terminating NUL.  Note that this must not be larger
207d62bc4baSyz  * than related networking constants such as LIFNAMSIZ.
208d62bc4baSyz  */
209d62bc4baSyz #define	MAXLINKNAMELEN	32
2117c478bd9Sstevel@tonic-gate #ifndef NADDR
2127c478bd9Sstevel@tonic-gate #define	NADDR 13
2137c478bd9Sstevel@tonic-gate #endif
2157c478bd9Sstevel@tonic-gate /*
2167c478bd9Sstevel@tonic-gate  * The following are defined to be the same as
2177c478bd9Sstevel@tonic-gate  * defined in /usr/include/limits.h.  They are
2187c478bd9Sstevel@tonic-gate  * needed for pipe and FIFO compatibility.
2197c478bd9Sstevel@tonic-gate  */
2207c478bd9Sstevel@tonic-gate #ifndef PIPE_BUF	/* max # bytes atomic in write to a pipe */
2217c478bd9Sstevel@tonic-gate #define	PIPE_BUF	5120
2227c478bd9Sstevel@tonic-gate #endif	/* PIPE_BUF */
2247c478bd9Sstevel@tonic-gate #ifndef PIPE_MAX	/* max # bytes written to a pipe in a write */
2257c478bd9Sstevel@tonic-gate #define	PIPE_MAX	5120
2267c478bd9Sstevel@tonic-gate #endif	/* PIPE_MAX */
2287c478bd9Sstevel@tonic-gate #ifndef NBBY
2297c478bd9Sstevel@tonic-gate #define	NBBY	8			/* number of bits per byte */
2307c478bd9Sstevel@tonic-gate #endif
2327c478bd9Sstevel@tonic-gate /* macros replacing interleaving functions */
2337c478bd9Sstevel@tonic-gate #define	dkblock(bp)	((bp)->b_blkno)
2347c478bd9Sstevel@tonic-gate #define	dkunit(bp)	(minor((bp)->b_dev) >> 3)
2367c478bd9Sstevel@tonic-gate /*
2377c478bd9Sstevel@tonic-gate  * File system parameters and macros.
2387c478bd9Sstevel@tonic-gate  *
2397c478bd9Sstevel@tonic-gate  * The file system is made out of blocks of at most MAXBSIZE units,
2407c478bd9Sstevel@tonic-gate  * with smaller units (fragments) only in the last direct block.
2417c478bd9Sstevel@tonic-gate  * MAXBSIZE primarily determines the size of buffers in the buffer
2427c478bd9Sstevel@tonic-gate  * pool. It may be made larger without any effect on existing
2437c478bd9Sstevel@tonic-gate  * file systems; however making it smaller make make some file
2447c478bd9Sstevel@tonic-gate  * systems unmountable.
2457c478bd9Sstevel@tonic-gate  *
2467c478bd9Sstevel@tonic-gate  * Note that the blocked devices are assumed to have DEV_BSIZE
2477c478bd9Sstevel@tonic-gate  * "sectors" and that fragments must be some multiple of this size.
2487c478bd9Sstevel@tonic-gate  */
2497c478bd9Sstevel@tonic-gate #define	MAXBSIZE	8192
2507c478bd9Sstevel@tonic-gate #define	DEV_BSIZE	512
2517c478bd9Sstevel@tonic-gate #define	DEV_BSHIFT	9		/* log2(DEV_BSIZE) */
2527c478bd9Sstevel@tonic-gate #define	MAXFRAG 	8
2537c478bd9Sstevel@tonic-gate #ifdef	_SYSCALL32
2547c478bd9Sstevel@tonic-gate #define	MAXOFF32_T	0x7fffffff
2557c478bd9Sstevel@tonic-gate #endif
2567c478bd9Sstevel@tonic-gate #ifdef	_LP64
2577c478bd9Sstevel@tonic-gate #define	MAXOFF_T	0x7fffffffffffffffl
2587c478bd9Sstevel@tonic-gate #define	MAXOFFSET_T	0x7fffffffffffffffl
2597c478bd9Sstevel@tonic-gate #else
2607c478bd9Sstevel@tonic-gate #define	MAXOFF_T	0x7fffffffl
2617c478bd9Sstevel@tonic-gate #ifdef _LONGLONG_TYPE
2627c478bd9Sstevel@tonic-gate #define	MAXOFFSET_T 	0x7fffffffffffffffLL
2637c478bd9Sstevel@tonic-gate #else
2647c478bd9Sstevel@tonic-gate #define	MAXOFFSET_T	0x7fffffff
2657c478bd9Sstevel@tonic-gate #endif
2667c478bd9Sstevel@tonic-gate #endif	/* _LP64 */
2687c478bd9Sstevel@tonic-gate #define	btodb(bytes)			/* calculates (bytes / DEV_BSIZE) */ \
2697c478bd9Sstevel@tonic-gate 	((unsigned long)(bytes) >> DEV_BSHIFT)
2707c478bd9Sstevel@tonic-gate #define	dbtob(db)			/* calculates (db * DEV_BSIZE) */ \
2717c478bd9Sstevel@tonic-gate 	((unsigned long)(db) << DEV_BSHIFT)
2737c478bd9Sstevel@tonic-gate /*	64 bit versions of btodb and dbtob */
2747c478bd9Sstevel@tonic-gate #define	lbtodb(bytes)			/* calculates (bytes / DEV_BSIZE) */ \
2757c478bd9Sstevel@tonic-gate 	((u_offset_t)(bytes) >> DEV_BSHIFT)
2767c478bd9Sstevel@tonic-gate #define	ldbtob(db)			/* calculates (db * DEV_BSIZE) */ \
2777c478bd9Sstevel@tonic-gate 	((u_offset_t)(db) << DEV_BSHIFT)
2797c478bd9Sstevel@tonic-gate #ifndef _ASM	/* Avoid typedef headaches for assembly files */
2807c478bd9Sstevel@tonic-gate #ifndef NODEV
2817c478bd9Sstevel@tonic-gate #define	NODEV	(dev_t)(-1l)
2827c478bd9Sstevel@tonic-gate #ifdef _SYSCALL32
2837c478bd9Sstevel@tonic-gate #define	NODEV32	(dev32_t)(-1)
2847c478bd9Sstevel@tonic-gate #endif	/* _SYSCALL32 */
2857c478bd9Sstevel@tonic-gate #endif	/* NODEV */
2867c478bd9Sstevel@tonic-gate #endif	/* _ASM */
2887c478bd9Sstevel@tonic-gate /*
2897c478bd9Sstevel@tonic-gate  * Size of arg list passed in by user.
2907c478bd9Sstevel@tonic-gate  */
2917c478bd9Sstevel@tonic-gate #define	NCARGS32	0x100000
2927c478bd9Sstevel@tonic-gate #define	NCARGS64	0x200000
2937c478bd9Sstevel@tonic-gate #ifdef	_LP64
2947c478bd9Sstevel@tonic-gate #define	NCARGS		NCARGS64
2957c478bd9Sstevel@tonic-gate #else	/* _LP64 */
2967c478bd9Sstevel@tonic-gate #define	NCARGS		NCARGS32
2977c478bd9Sstevel@tonic-gate #endif	/* _LP64 */
2997c478bd9Sstevel@tonic-gate /*
3007c478bd9Sstevel@tonic-gate  * Scale factor for scaled integers used to count
3017c478bd9Sstevel@tonic-gate  * %cpu time and load averages.
3027c478bd9Sstevel@tonic-gate  */
3037c478bd9Sstevel@tonic-gate #define	FSHIFT	8		/* bits to right of fixed binary point */
3047c478bd9Sstevel@tonic-gate #define	FSCALE	(1<<FSHIFT)
3067c478bd9Sstevel@tonic-gate /*
3077c478bd9Sstevel@tonic-gate  * Delay units are in microseconds.
3087c478bd9Sstevel@tonic-gate  *
3097c478bd9Sstevel@tonic-gate  * XXX	These macros are not part of the DDI!
3107c478bd9Sstevel@tonic-gate  */
3117c478bd9Sstevel@tonic-gate #if defined(_KERNEL) && !defined(_ASM)
3127c478bd9Sstevel@tonic-gate extern void drv_usecwait(clock_t);
3137c478bd9Sstevel@tonic-gate #define	DELAY(n)	drv_usecwait(n)
3147c478bd9Sstevel@tonic-gate #define	CDELAY(c, n)	\
3157c478bd9Sstevel@tonic-gate { \
3167c478bd9Sstevel@tonic-gate 	register int N = n; \
3177c478bd9Sstevel@tonic-gate 	while (--N > 0) { \
3187c478bd9Sstevel@tonic-gate 		if (c) \
3197c478bd9Sstevel@tonic-gate 			break; \
3207c478bd9Sstevel@tonic-gate 		drv_usecwait(1); \
3217c478bd9Sstevel@tonic-gate 	} \
3227c478bd9Sstevel@tonic-gate }
3237c478bd9Sstevel@tonic-gate #endif	/* defined(_KERNEL) && !defined(_ASM) */
3257c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
3267c478bd9Sstevel@tonic-gate }
3277c478bd9Sstevel@tonic-gate #endif
3297c478bd9Sstevel@tonic-gate /*
3307c478bd9Sstevel@tonic-gate  * The following is to free utilities from machine dependencies within
3317c478bd9Sstevel@tonic-gate  * an architecture. Must be included after definition of DEV_BSIZE.
3327c478bd9Sstevel@tonic-gate  */
334*3c4c5929SGordon Ross #if defined(_KERNEL) || defined(_KMEMUSER) || defined(_BOOT)
3367c478bd9Sstevel@tonic-gate #if defined(_MACHDEP)
3377c478bd9Sstevel@tonic-gate #include <sys/machparam.h>
3387c478bd9Sstevel@tonic-gate #endif
3407c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
3417c478bd9Sstevel@tonic-gate extern "C" {
3427c478bd9Sstevel@tonic-gate #endif
3447c478bd9Sstevel@tonic-gate #if defined(_KERNEL) && !defined(_ASM)
3457c478bd9Sstevel@tonic-gate extern int cpu_decay_factor;
3467c478bd9Sstevel@tonic-gate extern pid_t maxpid;
3477c478bd9Sstevel@tonic-gate extern pid_t jump_pid;
3497c478bd9Sstevel@tonic-gate extern uintptr_t _kernelbase;
3507c478bd9Sstevel@tonic-gate extern uintptr_t _userlimit;
3517c478bd9Sstevel@tonic-gate extern uintptr_t _userlimit32;
3527c478bd9Sstevel@tonic-gate #endif  /* defined(_KERNEL) && !defined(_ASM) */
3548793b36bSNick Todd /*
3558793b36bSNick Todd  * These three variables have been added within the #if defined(lint)
3568793b36bSNick Todd  * below to ensure visibility to lint. This is a short term workaround
3578793b36bSNick Todd  * to handle poor interaction between SS12 lint and these variables.
3588793b36bSNick Todd  * CR 6742611 has been logged to address these issues.
3598793b36bSNick Todd  */
3608793b36bSNick Todd #if defined(lint)
3618793b36bSNick Todd extern int snooping;
3628793b36bSNick Todd extern uint_t snoop_interval;
3638793b36bSNick Todd extern const unsigned int _pageshift;
3648793b36bSNick Todd #endif	/* lint */
3667c478bd9Sstevel@tonic-gate #if !defined(_MACHDEP)
3687c478bd9Sstevel@tonic-gate /*
3697c478bd9Sstevel@tonic-gate  * Implementation architecture independent sections of the kernel use
3707c478bd9Sstevel@tonic-gate  * this section.
3717c478bd9Sstevel@tonic-gate  */
3727c478bd9Sstevel@tonic-gate #if defined(_KERNEL) && !defined(_ASM)
3737c478bd9Sstevel@tonic-gate extern int hz;
3747c478bd9Sstevel@tonic-gate extern int snooping;
3757c478bd9Sstevel@tonic-gate extern uint_t snoop_interval;
3767c478bd9Sstevel@tonic-gate extern const unsigned long _pagesize;
3777c478bd9Sstevel@tonic-gate extern const unsigned int _pageshift;
3787c478bd9Sstevel@tonic-gate extern const unsigned long _pageoffset;
3797c478bd9Sstevel@tonic-gate extern const unsigned long long _pagemask;
3807c478bd9Sstevel@tonic-gate extern const unsigned long _mmu_pagesize;
3817c478bd9Sstevel@tonic-gate extern const unsigned int _mmu_pageshift;
3827c478bd9Sstevel@tonic-gate extern const unsigned long _mmu_pageoffset;
3837c478bd9Sstevel@tonic-gate extern const unsigned long _mmu_pagemask;
3847c478bd9Sstevel@tonic-gate extern const uintptr_t _argsbase;
3857c478bd9Sstevel@tonic-gate extern const unsigned long _defaultstksz;
3867c478bd9Sstevel@tonic-gate extern const unsigned int _nbpg;
3877c478bd9Sstevel@tonic-gate extern const int _ncpu;
38823d9e5acSMichael Corcoran extern const int _ncpu_log2;
389cb15d5d9SPeter Rival extern const int _ncpu_p2;
3907c478bd9Sstevel@tonic-gate extern const int _clsize;
3917c478bd9Sstevel@tonic-gate #endif	/* defined(_KERNEL) && !defined(_ASM) */
39342a4b3dcSJonathan Adams /* Any additions to these #defines must be reflected in mdb_param.h+mdb_ks.c */
3947c478bd9Sstevel@tonic-gate #define	PAGESIZE	_pagesize
3957c478bd9Sstevel@tonic-gate #define	PAGESHIFT	_pageshift
3967c478bd9Sstevel@tonic-gate #define	PAGEOFFSET	_pageoffset
3977c478bd9Sstevel@tonic-gate #define	PAGEMASK	_pagemask
3987c478bd9Sstevel@tonic-gate #define	MMU_PAGESIZE	_mmu_pagesize
3997c478bd9Sstevel@tonic-gate #define	MMU_PAGESHIFT	_mmu_pageshift
4007c478bd9Sstevel@tonic-gate #define	MMU_PAGEOFFSET	_mmu_pageoffset
4017c478bd9Sstevel@tonic-gate #define	MMU_PAGEMASK	_mmu_pagemask
4037c478bd9Sstevel@tonic-gate #define	KERNELBASE	_kernelbase
4047c478bd9Sstevel@tonic-gate #define	USERLIMIT	_userlimit
4057c478bd9Sstevel@tonic-gate #define	USERLIMIT32	_userlimit32
4067c478bd9Sstevel@tonic-gate #define	ARGSBASE	_argsbase
4077c478bd9Sstevel@tonic-gate #define	DEFAULTSTKSZ	_defaultstksz
4087c478bd9Sstevel@tonic-gate #define	NCPU		_ncpu
40923d9e5acSMichael Corcoran #define	NCPU_LOG2	_ncpu_log2
410cb15d5d9SPeter Rival #define	NCPU_P2		_ncpu_p2
4127c478bd9Sstevel@tonic-gate #endif	/* defined(_MACHDEP) */
4147c478bd9Sstevel@tonic-gate /*
4157c478bd9Sstevel@tonic-gate  * Some random macros for units conversion.
4167c478bd9Sstevel@tonic-gate  *
4177c478bd9Sstevel@tonic-gate  * These are machine independent but contain constants (*PAGESHIFT) which
4187c478bd9Sstevel@tonic-gate  * are only defined in the machine dependent file.
4197c478bd9Sstevel@tonic-gate  */
4217c478bd9Sstevel@tonic-gate /*
4227c478bd9Sstevel@tonic-gate  * MMU pages to bytes, and back (with and without rounding)
4237c478bd9Sstevel@tonic-gate  */
4247c478bd9Sstevel@tonic-gate #define	mmu_ptob(x)	((x) << MMU_PAGESHIFT)
4257c478bd9Sstevel@tonic-gate #define	mmu_btop(x)	(((x)) >> MMU_PAGESHIFT)
4267c478bd9Sstevel@tonic-gate #define	mmu_btopr(x)	((((x) + MMU_PAGEOFFSET) >> MMU_PAGESHIFT))
4287c478bd9Sstevel@tonic-gate /*
4297c478bd9Sstevel@tonic-gate  * 2 versions of pages to disk blocks
4307c478bd9Sstevel@tonic-gate  */
4317c478bd9Sstevel@tonic-gate #define	mmu_ptod(x)	((x) << (MMU_PAGESHIFT - DEV_BSHIFT))
4327c478bd9Sstevel@tonic-gate #define	ptod(x)		((x) << (PAGESHIFT - DEV_BSHIFT))
4347c478bd9Sstevel@tonic-gate /*
4357c478bd9Sstevel@tonic-gate  * pages to bytes, and back (with and without rounding)
4367c478bd9Sstevel@tonic-gate  * Large Files: The explicit cast of x to unsigned int is deliberately
4377c478bd9Sstevel@tonic-gate  * removed as part of large files work. We pass longlong values to
4387c478bd9Sstevel@tonic-gate  * theses macros.
4397c478bd9Sstevel@tonic-gate  *
4407c478bd9Sstevel@tonic-gate  * Cast the input to ptob() to be a page count. This enforces 64-bit
4417c478bd9Sstevel@tonic-gate  * math on 64-bit kernels. For 32-bit kernels, callers must explicitly
4427c478bd9Sstevel@tonic-gate  * cast the input to be a 64-bit type if values greater than 4GB/PAGESIZE
4437c478bd9Sstevel@tonic-gate  * are possible.
4447c478bd9Sstevel@tonic-gate  */
4467c478bd9Sstevel@tonic-gate #ifdef _LP64
4477c478bd9Sstevel@tonic-gate #define	ptob(x)		(((pgcnt_t)(x)) << PAGESHIFT)
4487c478bd9Sstevel@tonic-gate #else
4497c478bd9Sstevel@tonic-gate #define	ptob(x)		((x) << PAGESHIFT)
4507c478bd9Sstevel@tonic-gate #endif /* _LP64 */
4517c478bd9Sstevel@tonic-gate #define	btop(x)		(((x) >> PAGESHIFT))
4527c478bd9Sstevel@tonic-gate #define	btopr(x)	((((x) + PAGEOFFSET) >> PAGESHIFT))
4547c478bd9Sstevel@tonic-gate /*
4557c478bd9Sstevel@tonic-gate  * disk blocks to pages, rounded and truncated
4567c478bd9Sstevel@tonic-gate  */
4577c478bd9Sstevel@tonic-gate #define	NDPP		(PAGESIZE/DEV_BSIZE)	/* # of disk blocks per page */
4587c478bd9Sstevel@tonic-gate #define	dtop(DD)	(((DD) + NDPP - 1) >> (PAGESHIFT - DEV_BSHIFT))
4597c478bd9Sstevel@tonic-gate #define	dtopt(DD)	((DD) >> (PAGESHIFT - DEV_BSHIFT))
461ae115bc7Smrj /*
462ae115bc7Smrj  * kB to pages and back
463ae115bc7Smrj  */
464ae115bc7Smrj #define	kbtop(x)	((x) >> (PAGESHIFT - 10))
465ae115bc7Smrj #define	ptokb(x)	((x) << (PAGESHIFT - 10))
4677c478bd9Sstevel@tonic-gate /*
4687c478bd9Sstevel@tonic-gate  * POSIX.4 related configuration parameters
4697c478bd9Sstevel@tonic-gate  */
4707c478bd9Sstevel@tonic-gate #define	_AIO_LISTIO_MAX		(4096)
4717c478bd9Sstevel@tonic-gate #define	_AIO_MAX		(-1)
47206a502e8Scasper #define	_MQ_OPEN_MAX		(-1)
4737c478bd9Sstevel@tonic-gate #define	_MQ_PRIO_MAX		(32)
4747c478bd9Sstevel@tonic-gate #define	_SEM_NSEMS_MAX		INT_MAX
4757c478bd9Sstevel@tonic-gate #define	_SEM_VALUE_MAX		INT_MAX
4777c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
4787c478bd9Sstevel@tonic-gate }
4797c478bd9Sstevel@tonic-gate #endif
481*3c4c5929SGordon Ross #else	/* defined(_KERNEL) || defined(_KMEMUSER) || defined(_BOOT) */
4837c478bd9Sstevel@tonic-gate /*
4847c478bd9Sstevel@tonic-gate  * The following are assorted machine dependent values which can be
4857c478bd9Sstevel@tonic-gate  * obtained in a machine independent manner through sysconf(2) or
4867c478bd9Sstevel@tonic-gate  * sysinfo(2). In order to guarantee that these provide the expected
4877c478bd9Sstevel@tonic-gate  * value at all times, the System Private interface (leading underscore)
4887c478bd9Sstevel@tonic-gate  * is used.
4897c478bd9Sstevel@tonic-gate  */
4917c478bd9Sstevel@tonic-gate #include <sys/unistd.h>
4937c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
4947c478bd9Sstevel@tonic-gate extern "C" {
4957c478bd9Sstevel@tonic-gate #endif
4977c478bd9Sstevel@tonic-gate #if !defined(_ASM)
4987c478bd9Sstevel@tonic-gate extern long _sysconf(int);	/* System Private interface to sysconf() */
4997c478bd9Sstevel@tonic-gate #endif	/* !defined(_ASM) */
5017c478bd9Sstevel@tonic-gate #define	HZ		((clock_t)_sysconf(_SC_CLK_TCK))
5027c478bd9Sstevel@tonic-gate #define	TICK		(1000000000/((clock_t)_sysconf(_SC_CLK_TCK)))
5037c478bd9Sstevel@tonic-gate #define	PAGESIZE	(_sysconf(_SC_PAGESIZE))
5047c478bd9Sstevel@tonic-gate #define	PAGEOFFSET	(PAGESIZE - 1)
5057c478bd9Sstevel@tonic-gate #define	PAGEMASK	(~PAGEOFFSET)
5067c478bd9Sstevel@tonic-gate #define	MAXPID		((pid_t)_sysconf(_SC_MAXPID))
507f48205beScasper #define	MAXEPHUID	((uid_t)_sysconf(_SC_EPHID_MAX))
5097c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
5107c478bd9Sstevel@tonic-gate }
5117c478bd9Sstevel@tonic-gate #endif
513*3c4c5929SGordon Ross #endif	/* defined(_KERNEL) || defined(_KMEMUSER) || defined(_BOOT) */
5157c478bd9Sstevel@tonic-gate #endif	/* _SYS_PARAM_H */