/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2014 Nexenta Systems, Inc. All rights reserved. * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved. */ /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ /* All Rights Reserved */ /* * University Copyright- Copyright (c) 1982, 1986, 1988 * The Regents of the University of California * All Rights Reserved * * University Acknowledgment- Portions of this document are derived from * software developed by the University of California, Berkeley, and its * contributors. */ #ifndef _SYS_PARAM_H #define _SYS_PARAM_H #ifndef _ASM /* Avoid typedef headaches for assembly files */ #include <sys/types.h> #include <sys/isa_defs.h> #endif /* _ASM */ #include <sys/null.h> #ifdef __cplusplus extern "C" { #endif /* * Fundamental variables; don't change too often. */ /* * _POSIX_VDISABLE has historically been defined in <sys/param.h> since * an early merge with AT&T source. It has also historically been defined * in <sys/termios.h>. The POSIX standard, IEEE Std. 1003.1-1988 initially * required the existence of _POSIX_VDISABLE in <sys/termios.h>. * Subsequent versions of the IEEE Standard as well as the X/Open * specifications required that _POSIX_VDISABLE be defined in <unistd.h> * while still allowing for it's existence in other headers. With the * introduction of XPG6, _POSIX_VDISABLE can only be defined in <unistd.h>. */ #if !defined(_XPG6) || defined(__EXTENSIONS__) #ifndef _POSIX_VDISABLE #define _POSIX_VDISABLE 0 /* Disable special character functions */ #endif #endif /* !defined(_XPG6) || defined(__EXTENSIONS__) */ /* The actual size of the TTY input queue */ #define _TTY_BUFSIZ 2048 /* * These defines all have their historical value. The actual size of the tty * buffer both for the line-editor in ldterm, and in general, is above as * _TTY_BUFSIZ. * * We leave these defines at their historical value to match the behaviour of * BSD and Linux. */ #ifndef MAX_INPUT #define MAX_INPUT 512 /* Maximum bytes stored in the input queue */ #endif #ifndef MAX_CANON #define MAX_CANON 256 /* Maximum bytes for canonical processing */ #endif #define CANBSIZ 256 /* max size of typewriter line */ #define UID_NOBODY 60001 /* user ID no body */ #define GID_NOBODY UID_NOBODY #define UID_UNKNOWN 96 #define GID_UNKNOWN UID_UNKNOWN #define UID_DLADM 15 #define UID_NETADM 16 #define GID_NETADM 65 #define UID_NOACCESS 60002 /* user ID no access */ #ifdef _KERNEL #define MAX_TASKID 999999 #define MAX_MAXPID 999999 #define MAXEPHUID 0xfffffffcu /* max ephemeral user id */ #define FAMOUS_PID_SCHED 0 #define FAMOUS_PID_INIT 1 #define FAMOUS_PID_PAGEOUT 2 #define FAMOUS_PID_FSFLUSH 3 #define FAMOUS_PIDS 4 #endif #ifdef DEBUG #define DEFAULT_MAXPID 999999 #define DEFAULT_JUMPPID 100000 #else #define DEFAULT_MAXPID 30000 #define DEFAULT_JUMPPID 0 #endif #define MAXUID 2147483647 /* max user id */ #define MAXPROJID MAXUID /* max project id */ #define MAXLINK 32767 /* max links */ #define MINEPHUID 0x80000000u /* min ephemeral user id */ #define NMOUNT 40 /* est. of # mountable fs for quota calc */ #define NOFILE 20 /* this define is here for */ /* compatibility purposes only */ /* and will be removed in a */ /* later release */ /* * These define the maximum and minimum allowable values of the * configurable parameter NGROUPS_MAX. */ #define NGROUPS_UMIN 0 #define NGROUPS_UMAX 1024 #define NGROUPS_OLDMAX 32 /* * NGROUPS_MAX_DEFAULT: *MUST* match NGROUPS_MAX value in limits.h. */ #define NGROUPS_MAX_DEFAULT 16 /* * Default process priority. Keep it in sync with limits.h. */ #define NZERO 20 /* * Fundamental constants of the implementation--cannot be changed easily. */ #if !defined(_ASM) #define NBPW sizeof (int) /* number of bytes in an integer */ #endif /* _ASM */ #define CMASK 022 /* default mask for file creation */ #define CDLIMIT (1L<<11) /* default max write address */ #define NBPS 0x20000 /* Number of bytes per segment */ #define NBPSCTR 512 /* Bytes per disk sector. */ #define UBSIZE 512 /* unix block size. */ #define SCTRSHFT 9 /* Shift for BPSECT. */ #ifdef _LITTLE_ENDIAN #define lobyte(X) (((unsigned char *)&(X))[0]) #define hibyte(X) (((unsigned char *)&(X))[1]) #define loword(X) (((ushort_t *)&(X))[0]) #define hiword(X) (((ushort_t *)&(X))[1]) #endif #ifdef _BIG_ENDIAN #define lobyte(X) (((unsigned char *)&(X))[1]) #define hibyte(X) (((unsigned char *)&(X))[0]) #define loword(X) (((ushort_t *)&(X))[1]) #define hiword(X) (((ushort_t *)&(X))[0]) #endif /* REMOTE -- whether machine is primary, secondary, or regular */ #define SYSNAME 9 /* # chars in system name */ #define PREMOTE 39 /* * MAXPATHLEN defines the longest permissible path length, * including the terminating null, after expanding symbolic links. * TYPICALMAXPATHLEN is used in a few places as an optimization * with a local buffer on the stack to avoid kmem_alloc(). * 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. * MAXNAMELEN is the length (including the terminating null) of * the longest permissible file (component) name. */ #define MAXPATHLEN 1024 #define TYPICALMAXPATHLEN 64 #define MAXSYMLINKS 20 #define MAXNAMELEN 256 /* * MAXLINKNAMELEN defines the longest possible permitted datalink name, * including the terminating NUL. Note that this must not be larger * than related networking constants such as LIFNAMSIZ. */ #define MAXLINKNAMELEN 32 #ifndef NADDR #define NADDR 13 #endif /* * The following are defined to be the same as * defined in /usr/include/limits.h. They are * needed for pipe and FIFO compatibility. */ #ifndef PIPE_BUF /* max # bytes atomic in write to a pipe */ #define PIPE_BUF 5120 #endif /* PIPE_BUF */ #ifndef PIPE_MAX /* max # bytes written to a pipe in a write */ #define PIPE_MAX 5120 #endif /* PIPE_MAX */ #ifndef NBBY #define NBBY 8 /* number of bits per byte */ #endif /* macros replacing interleaving functions */ #define dkblock(bp) ((bp)->b_blkno) #define dkunit(bp) (minor((bp)->b_dev) >> 3) /* * File system parameters and macros. * * The file system is made out of blocks of at most MAXBSIZE units, * with smaller units (fragments) only in the last direct block. * MAXBSIZE primarily determines the size of buffers in the buffer * pool. It may be made larger without any effect on existing * file systems; however making it smaller make make some file * systems unmountable. * * Note that the blocked devices are assumed to have DEV_BSIZE * "sectors" and that fragments must be some multiple of this size. */ #define MAXBSIZE 8192 #define DEV_BSIZE 512 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ #define MAXFRAG 8 #ifdef _SYSCALL32 #define MAXOFF32_T 0x7fffffff #endif #ifdef _LP64 #define MAXOFF_T 0x7fffffffffffffffl #define MAXOFFSET_T 0x7fffffffffffffffl #else #define MAXOFF_T 0x7fffffffl #ifdef _LONGLONG_TYPE #define MAXOFFSET_T 0x7fffffffffffffffLL #else #define MAXOFFSET_T 0x7fffffff #endif #endif /* _LP64 */ #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ ((unsigned long)(bytes) >> DEV_BSHIFT) #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ ((unsigned long)(db) << DEV_BSHIFT) /* 64 bit versions of btodb and dbtob */ #define lbtodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ ((u_offset_t)(bytes) >> DEV_BSHIFT) #define ldbtob(db) /* calculates (db * DEV_BSIZE) */ \ ((u_offset_t)(db) << DEV_BSHIFT) #ifndef _ASM /* Avoid typedef headaches for assembly files */ #ifndef NODEV #define NODEV (dev_t)(-1l) #ifdef _SYSCALL32 #define NODEV32 (dev32_t)(-1) #endif /* _SYSCALL32 */ #endif /* NODEV */ #endif /* _ASM */ /* * Size of arg list passed in by user. */ #define NCARGS32 0x100000 #define NCARGS64 0x200000 #ifdef _LP64 #define NCARGS NCARGS64 #else /* _LP64 */ #define NCARGS NCARGS32 #endif /* _LP64 */ /* * Scale factor for scaled integers used to count * %cpu time and load averages. */ #define FSHIFT 8 /* bits to right of fixed binary point */ #define FSCALE (1<<FSHIFT) /* * Delay units are in microseconds. * * XXX These macros are not part of the DDI! */ #if defined(_KERNEL) && !defined(_ASM) extern void drv_usecwait(clock_t); #define DELAY(n) drv_usecwait(n) #define CDELAY(c, n) \ { \ register int N = n; \ while (--N > 0) { \ if (c) \ break; \ drv_usecwait(1); \ } \ } #endif /* defined(_KERNEL) && !defined(_ASM) */ #ifdef __cplusplus } #endif /* * The following is to free utilities from machine dependencies within * an architecture. Must be included after definition of DEV_BSIZE. */ #if defined(_KERNEL) || defined(_KMEMUSER) || defined(_BOOT) #if defined(_MACHDEP) #include <sys/machparam.h> #endif #ifdef __cplusplus extern "C" { #endif #if defined(_KERNEL) && !defined(_ASM) extern int cpu_decay_factor; extern pid_t maxpid; extern pid_t jump_pid; extern uintptr_t _kernelbase; extern uintptr_t _userlimit; extern uintptr_t _userlimit32; #endif /* defined(_KERNEL) && !defined(_ASM) */ /* * These three variables have been added within the #if defined(lint) * below to ensure visibility to lint. This is a short term workaround * to handle poor interaction between SS12 lint and these variables. * CR 6742611 has been logged to address these issues. */ #if defined(lint) extern int snooping; extern uint_t snoop_interval; extern const unsigned int _pageshift; #endif /* lint */ #if !defined(_MACHDEP) /* * Implementation architecture independent sections of the kernel use * this section. */ #if defined(_KERNEL) && !defined(_ASM) extern int hz; extern int snooping; extern uint_t snoop_interval; extern const unsigned long _pagesize; extern const unsigned int _pageshift; extern const unsigned long _pageoffset; extern const unsigned long long _pagemask; extern const unsigned long _mmu_pagesize; extern const unsigned int _mmu_pageshift; extern const unsigned long _mmu_pageoffset; extern const unsigned long _mmu_pagemask; extern const unsigned long _defaultstksz; extern const unsigned int _nbpg; extern const int _ncpu; extern const int _ncpu_log2; extern const int _ncpu_p2; extern const int _clsize; #endif /* defined(_KERNEL) && !defined(_ASM) */ /* Any additions to these #defines must be reflected in mdb_param.h+mdb_ks.c */ #define PAGESIZE _pagesize #define PAGESHIFT _pageshift #define PAGEOFFSET _pageoffset #define PAGEMASK _pagemask #define MMU_PAGESIZE _mmu_pagesize #define MMU_PAGESHIFT _mmu_pageshift #define MMU_PAGEOFFSET _mmu_pageoffset #define MMU_PAGEMASK _mmu_pagemask #define KERNELBASE _kernelbase #define USERLIMIT _userlimit #define USERLIMIT32 _userlimit32 #define DEFAULTSTKSZ _defaultstksz #define NCPU _ncpu #define NCPU_LOG2 _ncpu_log2 #define NCPU_P2 _ncpu_p2 #endif /* defined(_MACHDEP) */ /* * Some random macros for units conversion. * * These are machine independent but contain constants (*PAGESHIFT) which * are only defined in the machine dependent file. */ /* * MMU pages to bytes, and back (with and without rounding) */ #define mmu_ptob(x) ((x) << MMU_PAGESHIFT) #define mmu_btop(x) (((x)) >> MMU_PAGESHIFT) #define mmu_btopr(x) ((((x) + MMU_PAGEOFFSET) >> MMU_PAGESHIFT)) /* * 2 versions of pages to disk blocks */ #define mmu_ptod(x) ((x) << (MMU_PAGESHIFT - DEV_BSHIFT)) #define ptod(x) ((x) << (PAGESHIFT - DEV_BSHIFT)) /* * pages to bytes, and back (with and without rounding) * Large Files: The explicit cast of x to unsigned int is deliberately * removed as part of large files work. We pass longlong values to * theses macros. * * Cast the input to ptob() to be a page count. This enforces 64-bit * math on 64-bit kernels. For 32-bit kernels, callers must explicitly * cast the input to be a 64-bit type if values greater than 4GB/PAGESIZE * are possible. */ #ifdef _LP64 #define ptob(x) (((pgcnt_t)(x)) << PAGESHIFT) #else #define ptob(x) ((x) << PAGESHIFT) #endif /* _LP64 */ #define btop(x) (((x) >> PAGESHIFT)) #define btopr(x) ((((x) + PAGEOFFSET) >> PAGESHIFT)) /* * disk blocks to pages, rounded and truncated */ #define NDPP (PAGESIZE/DEV_BSIZE) /* # of disk blocks per page */ #define dtop(DD) (((DD) + NDPP - 1) >> (PAGESHIFT - DEV_BSHIFT)) #define dtopt(DD) ((DD) >> (PAGESHIFT - DEV_BSHIFT)) /* * kB to pages and back */ #define kbtop(x) ((x) >> (PAGESHIFT - 10)) #define ptokb(x) ((x) << (PAGESHIFT - 10)) /* * POSIX.4 related configuration parameters */ #define _AIO_LISTIO_MAX (4096) #define _AIO_MAX (-1) #define _MQ_OPEN_MAX (-1) #define _MQ_PRIO_MAX (32) #define _SEM_NSEMS_MAX INT_MAX #define _SEM_VALUE_MAX INT_MAX #ifdef __cplusplus } #endif #else /* defined(_KERNEL) || defined(_KMEMUSER) || defined(_BOOT) */ /* * The following are assorted machine dependent values which can be * obtained in a machine independent manner through sysconf(2) or * sysinfo(2). In order to guarantee that these provide the expected * value at all times, the System Private interface (leading underscore) * is used. */ #include <sys/unistd.h> #ifdef __cplusplus extern "C" { #endif #if !defined(_ASM) extern long _sysconf(int); /* System Private interface to sysconf() */ #endif /* !defined(_ASM) */ #define HZ ((clock_t)_sysconf(_SC_CLK_TCK)) #define TICK (1000000000/((clock_t)_sysconf(_SC_CLK_TCK))) #define PAGESIZE (_sysconf(_SC_PAGESIZE)) #define PAGEOFFSET (PAGESIZE - 1) #define PAGEMASK (~PAGEOFFSET) #define MAXPID ((pid_t)_sysconf(_SC_MAXPID)) #define MAXEPHUID ((uid_t)_sysconf(_SC_EPHID_MAX)) #ifdef __cplusplus } #endif #endif /* defined(_KERNEL) || defined(_KMEMUSER) || defined(_BOOT) */ #endif /* _SYS_PARAM_H */
