/** @file ../include/sys/param.h
@internalComponent
*/
/** @def NOFILE
max open files per process
@publishedAll
@externallyDefinedApi
*/
/** @def MAXCOMLEN
max command name remembered
@publishedAll
@externallyDefinedApi
*/
/** @def MAXINTERP
max interpreter file name length
@publishedAll
@externallyDefinedApi
*/
/** @def MAXLOGNAME
max login name length (incl. NUL)
@publishedAll
@externallyDefinedApi
*/
/** @def MAXUPRC
max simultaneous processes
@publishedAll
@externallyDefinedApi
*/
/** @def NCARGS
max bytes for an exec function
@publishedAll
@externallyDefinedApi
*/
/** @def NGROUPS
max number groups
@publishedAll
@externallyDefinedApi
*/
/** @def NOFILE
max open files per process
@publishedAll
@externallyDefinedApi
*/
/** @def NOGROUP
marker for empty group set member
@publishedAll
@externallyDefinedApi
*/
/** @def MAXHOSTNAMELEN
max hostname size
@publishedAll
@externallyDefinedApi
*/
/** @def SPECNAMELEN
max length of devicename
@publishedAll
@externallyDefinedApi
*/
/** @def DEV_BSHIFT
log2(DEV_BSIZE)
@publishedAll
@externallyDefinedApi
*/
/** @def DEV_BSIZE
(1<<DEV_BSHIFT)
@publishedAll
@externallyDefinedApi
*/
/** @def BLKDEV_IOSIZE
default block device I/O size
@publishedAll
@externallyDefinedApi
*/
/** @def DFLTPHYS
default max raw IO transfer size
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@externallyDefinedApi
*/
/** @def MAXPHYS
max raw IO transfer size
@publishedAll
@externallyDefinedApi
*/
/** @def MAXDUMPPGS
(DFLTPHYS by PAGE_SIZE)
@publishedAll
@externallyDefinedApi
*/
/** @def MSIZE
size of an mbuf
@publishedAll
@externallyDefinedApi
*/
/** @def ctob(x)
clicks to bytes
@publishedAll
@externallyDefinedApi
*/
/** @def btoc(x)
bytes to clicks
@publishedAll
@externallyDefinedApi
*/
/** @def btodb(bytes)
calculates (bytes by DEV_BSIZE)
@publishedAll
@externallyDefinedApi
*/
/** @def dbtob(db)
calculates (db)(DEV_BSIZE)
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@externallyDefinedApi
*/
/** @def PRIMASK
Primary mask
@publishedAll
@externallyDefinedApi
*/
/** @def PCATCH
ORd with pri for tsleep to check signals
@publishedAll
@externallyDefinedApi
*/
/** @def PDROP
ORd with pri to stop re-entry of interlock mutex
@publishedAll
@externallyDefinedApi
*/
/** @def NZERO
default "nice"
@publishedAll
@externallyDefinedApi
*/
/** @def NBBY
number of bits in a byte
@publishedAll
@externallyDefinedApi
*/
/** @def NBPW
number of bytes per word (integer)
@publishedAll
@externallyDefinedApi
*/
/** @def CMASK
default file mask: S_IWGRP OR S_IWOTH
@publishedAll
@externallyDefinedApi
*/
/** @def NODEV
non-existent device
@publishedAll
@externallyDefinedApi
*/
/** @def CBLOCK
Clist block size, must be a power of 2.
@publishedAll
@externallyDefinedApi
*/
/** @def CBQSIZE
Quote bytes or cblock
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@externallyDefinedApi
*/
/** @def CBSIZE
Data chars or clist
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@externallyDefinedApi
*/
/** @def CROUND
Clist rounding.
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@externallyDefinedApi
*/
/** @def MAXBSIZE
Filesystems are made out of blocks of at most MAXBSIZE bytes per block.
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.
@publishedAll
@externallyDefinedApi
*/
/** @def BKVASIZE
Nominal buffer space per buffer, in bytes. BKVASIZE is the minimum KVM memory reservation the kernel is willing to make.
Filesystems can of course request smaller chunks. Actual backing memory uses a chunk size of a page (PAGE_SIZE).
@publishedAll
@externallyDefinedApi
*/
/** @def BKVAMASK
File system parameter and macros
@publishedAll
@externallyDefinedApi
*/
/** @def MAXPATHLEN
MAXPATHLEN defines the longest permissible path length after expanding symbolic links.
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.
@publishedAll
@externallyDefinedApi
*/
/** @def MAXSYMLINKS
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.
@publishedAll
@externallyDefinedApi
*/
/** @def howmany(x, y)
Macros for counting and rounding.
@publishedAll
@externallyDefinedApi
*/
/** @def rounddown(x, y)
Macros for counting and rounding.
@publishedAll
@released
*/
/** @def roundup(x, y)
Macros for counting and rounding.
@publishedAll
@released
*/
/** @def roundup2(x, y)
Macros for counting and rounding.
@publishedAll
@released
*/
/** @def powerof2(x)
Macros for counting and rounding.
@publishedAll
@externallyDefinedApi
*/
/** @def MIN(a,b)
Macros for min or max.
@publishedAll
@externallyDefinedApi
*/
/** @def MAX(a,b)
Macros for min or max.
@publishedAll
@externallyDefinedApi
*/
/** @def MINBUCKET
min allocation of 32 bytes or 16 bytes
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@externallyDefinedApi
*/
/** @def MAXALLOCSAVE
(2)(PAGE_SIZE)
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@externallyDefinedApi
*/
/** @def FSHIFT
bits to right of fixed binary point
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@externallyDefinedApi
*/
/** @def FSCALE
bits to right 1 shift
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@externallyDefinedApi
*/