/* IBM_PROLOG_BEGIN_TAG                                                   */
/* This is an automatically generated prolog.                             */
/*                                                                        */
/* bos720 src/bos/kernel/sys/param.h 1.40.1.7                             */
/*                                                                        */
/* Licensed Materials - Property of IBM                                   */
/*                                                                        */
/* COPYRIGHT International Business Machines Corp. 1988,1995              */
/* All Rights Reserved                                                    */
/*                                                                        */
/* US Government Users Restricted Rights - Use, duplication or            */
/* disclosure restricted by GSA ADP Schedule Contract with IBM Corp.      */
/*                                                                        */
/* IBM_PROLOG_END_TAG                                                     */
/* @(#)45	1.40.1.7  src/bos/kernel/sys/param.h, sysproc, bos720 6/14/06 03:08:04 */
#ifndef _H_PARAM
#define _H_PARAM

/*
 * COMPONENT_NAME: (SYSPROC) process management
 *
 * FUNCTIONS: none
 *
 * ORIGINS: 26, 9, 27
 *
 * (C) COPYRIGHT International Business Machines Corp. 1988, 1995
 * All Rights Reserved
 * Licensed Materials - Property of IBM
 *
 * US Government Users Restricted Rights - Use, duplication or
 * disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 *
 */

#ifdef __cplusplus
extern "C" {
#endif

#include <sys/types.h>
#include <sys/m_param.h>
#include <sys/limits.h>
#include <jfs/fsparam.h>
#include <sys/machine.h>

#define MAXUPRC	CHILD_MAX
#define NOFILE	OPEN_MAX

/*
 * fundamental variables
 * don't change too often
 */

#define	MAXPID	PID_MAX		/* max process id			*/
#define	MAXUID	UID_MAX		/* max user id				*/
#define	MAXLINK	LINK_MAX	/* max links				*/

#define MAXBLK	500		/* max blocks possible for phys IO	*/
#define	CANBSIZ	MAX_CANON	/* max size of typewriter line		*/
#define NCARGS_SHIFT	22	/* log2 of NCARGS_MAX			*/

/* ARG_MAX and NCARGS values are user configurable. The definition given in this file
is just the default one and doesn't necessarily match the running system. The application
should query the supported size using sysconf(_SC_ARG_MAX) and dynamically allocate size.
Static allocation of ARG_MAX & NCARGS values should be avoided. */

#define	NCARGS		ARG_MAX	/* # characters in exec arglist, minimum*/ 
#define	NCARGS_MAX	(1ul<<NCARGS_SHIFT)   /* and maximum		*/
#define NGROUPS NGROUPS_MAX     /* max number of concurrent groups for user */

/*
 * fundamental constants of the implementation--
 * cannot be changed easily
 */
#ifndef PAGESIZE
#define PAGESIZE	4096	/* page size in bytes			*/
#endif /* PAGESIZE */
#define PGSHIFT		12	/* log2 of PAGESIZE			*/
#if defined(_KERNSYS) && defined(__64BIT_KERNEL)
#define MAXPGPSIZE    0x10000   /* largest supp. pageable page size     */
#else
#define MAXPGPSIZE   PAGESIZE   /* largest supp. pageable page size     */
#endif /* _KERNSYS && __64BIT_KERNEL */
#define	NBPW	sizeof(int)	/* number of bytes in an integer	*/
#define NBPB		(8)	/* number of bits in a byte		*/
#define BPBSHIFT	(3)	/* log2(NBPB)				*/
#define UWSHIFT		(5)	/* log2(number of bits in an integer)	*/


/*
 * UBSIZE: Units for communication with user in ulimit, ustat.
 */
#define UBSIZE	512		/* bytes in a "user block" (<= BSIZE)	*/
#define UBSHIFT 9		/* LOG2(UBSIZE)				*/

#define NCPS	1		/* Number of clicks per segment		*/
#define NBPC	PAGESIZE	/* Number of bytes per click		*/
#define NCPD	1		/* Number of clicks per disk block	*/
#define BPCSHIFT       12	/* LOG2(NBPC) if exact			*/

#ifndef NULL
#define	NULL	0		/* p79626 */
#endif

#define GOOD	0
#define BAD	(-1)

/*
 * MAXPATHLEN defines the longest permissable path length
 * after expanding symbolic links. It is used to allocate
 * a temporary buffer in which to do the name expansion.
 * MAXSYMLINKS defines the maximum number of symbolic links
 * that may be expanded in a path name. It should be set high
 * enough to allow all legitimate uses, but halt infinite loops
 * reasonably quickly.
 */
#define MAXPATHLEN	(PATH_MAX+1)
#define MAXSYMLINKS	20
#ifndef MAXBSIZE
#ifdef	BSIZE
#define	MAXBSIZE	BSIZE
#else
#define	MAXBSIZE	4096
#endif
#endif

#define	MAXPATH	512		/* maximum pathlength for mount args	*/

#define	CMASK	0		/* default mask for file creation	*/
#define	CDLIMIT	(1L<<13)	/* default max write address		*/
#define	NODEVICE	(dev_t)(-1)

#define BASEPRI()	(PS == 7)	/** really ??????? **/

#define BUSOPEN(ics)	   (ics & 0x18)
    /* true if user has /dev/bus open */

#if BYTE_ORDER == BIG_ENDIAN
#define	lobyte(X)	(((unsigned char *)&(X))[1])
#define	hibyte(X)	(((unsigned char *)&(X))[0])
#define	loword(X)	(((ushort *)&(X))[1])
#define	hiword(X)	(((ushort *)&(X))[0])
#else
#define	lobyte(X)	(((unsigned char *)&(X))[0])
#define	hibyte(X)	(((unsigned char *)&(X))[1])
#define	loword(X)	(((ushort *)&(X))[0])
#define	hiword(X)	(((ushort *)&(X))[1])
#endif /* BYTE_ORDER == BIG_ENDIAN */
/*
 * BSD style param constants for use in AIX
 */

/*
 * bit map related macros
 */
#define	setbit(a,i)	((a)[(i)/NBBY] |= 1<<((i)%NBBY))
#define	clrbit(a,i)	((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
#define	isset(a,i)	((a)[(i)/NBBY] & (1<<((i)%NBBY)))
#define	isclr(a,i)	(((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)

/*
 * Macros for fast min/max.
 */
#ifndef MIN
#define	MIN(a,b) (((a)<(b))?(a):(b))
#endif /* MIN */
#ifndef MAX
#define	MAX(a,b) (((a)>(b))?(a):(b))
#endif /* MAX */

/*
 * Macros for counting and rounding.
 */
#ifndef howmany
#define	howmany(x, y)	(((x)+((y)-1))/(y))
#endif
#define	roundup(x, y)	((((x)+((y)-1))/(y))*(y))

/*
 * Maximum size of hostname recognized and stored in the kernel.
 */
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN	256
#endif	/* MAXHOSTNAMELEN */

/* for AIX sockets */
/* MBUF CLUSTER defines, totally unlike the vax */
#define NBPG		PAGESIZE
/* This used to be CLSIZE, changed to avoid name collision, see sys/tty.h */
#define CLUSTERSIZE	1			/* one cluster per page	*/
#define	CLBYTES		(CLUSTERSIZE*PAGESIZE)	/* PAGESIZE from AIX	*/
#define	CLOFSET		(CLUSTERSIZE*PAGESIZE-1)/* for clusters, like PGOFSET */
#define	claligned(x)	((((int)(x))&CLOFSET)==0)
#define	CLOFF		CLOFSET
#define	CLSIZELOG2	0			/* CLUSTERSIZE == PAGESIZE */
#define	CLSHIFT		(BPCSHIFT+CLSIZELOG2)	/* Bytes per Click shift AIX */

#if CLUSTERSIZE==1
#define	clbase(i)	(i)
#define	clrnd(i)	(i)
#else
/* give the base virtual address (first of CLUSTERSIZE) */
#define	clbase(i)	((i) &~ (CLUSTERSIZE-1))
/* round a number of clicks up to a whole cluster */
#define	clrnd(i)	(((i) + (CLUSTERSIZE-1)) &~ (CLUSTERSIZE-1))
#endif

/* BSD param.h also includes signal.h */
#ifdef	_BSD
#ifndef _KERNEL
#include <sys/signal.h>
#endif /* _KERNEL */
#endif	/* _BSD */

#define CPUP_WLM_CLASSES	0
#define CPUP_PROC_RSETS		1
#define CPUP_BOUND_PROCS	2

#include "sys/sysmacros.h"

#ifdef __cplusplus
}
#endif
#endif /* _H_PARAM */