sl@0: /** @file ../include/sys/param.h
sl@0: @internalComponent
sl@0: */
sl@0: 
sl@0: /** @def NOFILE
sl@0: 
sl@0: max open files per process
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def MAXCOMLEN	
sl@0: 
sl@0: max command name remembered
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def MAXINTERP	
sl@0: 
sl@0: max interpreter file name length
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def MAXLOGNAME	
sl@0: 
sl@0: max login name length (incl. NUL)
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def MAXUPRC	
sl@0: 
sl@0: max simultaneous processes
sl@0: 	
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def NCARGS		
sl@0: 
sl@0: max bytes for an exec function
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def NGROUPS	
sl@0: 
sl@0: max number groups
sl@0: 	
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def NOFILE	
sl@0: 
sl@0: max open files per process
sl@0: 	
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def NOGROUP		
sl@0: 
sl@0: marker for empty group set member
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def MAXHOSTNAMELEN	
sl@0: 
sl@0: max hostname size
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def SPECNAMELEN	
sl@0: 
sl@0: max length of devicename 
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def DEV_BSHIFT	
sl@0: 
sl@0: log2(DEV_BSIZE)
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def DEV_BSIZE
sl@0: 
sl@0: (1<<DEV_BSHIFT)
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def BLKDEV_IOSIZE  
sl@0: 
sl@0: default block device I/O size
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def DFLTPHYS	
sl@0: 
sl@0: default max raw IO transfer size
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def MAXPHYS
sl@0: 
sl@0: max raw IO transfer size
sl@0: 		
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def MAXDUMPPGS	
sl@0: 
sl@0: (DFLTPHYS by PAGE_SIZE)
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def MSIZE		
sl@0: 
sl@0: size of an mbuf 
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def ctob(x)	
sl@0: 
sl@0: clicks to bytes
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def btoc(x)
sl@0: 
sl@0: bytes to clicks
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def btodb(bytes)
sl@0: 
sl@0: calculates (bytes by DEV_BSIZE)
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def dbtob(db)
sl@0: 
sl@0: calculates (db)(DEV_BSIZE)
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def PRIMASK	
sl@0: 
sl@0: Primary mask
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def PCATCH	
sl@0: 
sl@0: ORd with pri for tsleep to check signals
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def PDROP	
sl@0: 
sl@0: ORd with pri to stop re-entry of interlock mutex 
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0:  
sl@0: 
sl@0: /** @def NZERO	
sl@0: 
sl@0: default "nice"
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def NBBY	
sl@0: 
sl@0: number of bits in a byte
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def NBPW	
sl@0: 
sl@0: number of bytes per word (integer)
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def CMASK	
sl@0: 
sl@0: default file mask: S_IWGRP OR S_IWOTH
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def NODEV	
sl@0: 
sl@0: non-existent device
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def CBLOCK	
sl@0: 
sl@0: Clist block size, must be a power of 2.
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: 
sl@0: /** @def CBQSIZE
sl@0: 
sl@0: Quote bytes or cblock 
sl@0: 	
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def CBSIZE	
sl@0: 
sl@0: Data chars or clist
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def CROUND	
sl@0: 
sl@0: Clist rounding.
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def MAXBSIZE
sl@0: 
sl@0: Filesystems are made out of blocks of at most MAXBSIZE bytes per block.  
sl@0: MAXBSIZE may be made larger without effecting any existing filesystems as long as it does not exceed MAXPHYS, and may be made smaller at the risk of not being able to use filesystems which require a block size exceeding MAXBSIZE.
sl@0: 	
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def BKVASIZE	
sl@0: 
sl@0: Nominal buffer space per buffer, in bytes.  BKVASIZE is the minimum KVM memory reservation the kernel is willing to make.
sl@0: Filesystems can of course request smaller chunks.  Actual  backing memory uses a chunk size of a page (PAGE_SIZE).
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def BKVAMASK
sl@0: 
sl@0: File system parameter and macros
sl@0: 	
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def MAXPATHLEN	
sl@0: 
sl@0: MAXPATHLEN defines the longest permissible path length after expanding symbolic links. 
sl@0: It is used to allocate a temporary buffer from the buffer pool in which to do the name expansion, hence should be a power of two,and must be less than or equal to MAXBSIZE.  
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def MAXSYMLINKS	
sl@0: 
sl@0: Maximum number of symbolic links that may be expanded in a path name.
sl@0: It should be set high enough to allow all legitimate uses, but halt infinite loops reasonably quickly.
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def howmany(x, y)
sl@0: 
sl@0: Macros for counting and rounding.
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def rounddown(x, y)
sl@0: 
sl@0: Macros for counting and rounding.
sl@0: 
sl@0: @publishedAll
sl@0: @released
sl@0: */
sl@0: 
sl@0: /** @def roundup(x, y)
sl@0: 
sl@0: Macros for counting and rounding.
sl@0: 
sl@0: @publishedAll
sl@0: @released
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def roundup2(x, y)
sl@0: 
sl@0: Macros for counting and rounding.
sl@0: 
sl@0: @publishedAll
sl@0: @released
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def powerof2(x)	
sl@0: 
sl@0: Macros for counting and rounding.
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def MIN(a,b)
sl@0: 
sl@0: Macros for min or max.
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def MAX(a,b) 
sl@0: 
sl@0: Macros for min or max.
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: 
sl@0: /** @def MINBUCKET	
sl@0: 
sl@0: min allocation of 32 bytes or 16 bytes
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: /** @def MAXALLOCSAVE	
sl@0: 
sl@0: (2)(PAGE_SIZE)
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def FSHIFT
sl@0: 
sl@0: bits to right of fixed binary point
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: /** @def FSCALE
sl@0: 
sl@0: bits to right 1 shift
sl@0: 
sl@0: @publishedAll
sl@0: @externallyDefinedApi
sl@0: */
sl@0: 
sl@0: 
sl@0: 
sl@0: 
sl@0: