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.\" $OpenBSD: types.5,v 1.12 2004/02/10 07:39:40 jmc Exp $
.\" $NetBSD: types.5,v 1.4 1997/07/10 06:56:38 mikel Exp $
.\"
.\" Copyright (c) 1980, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)types.5 8.1 (Berkeley) 6/5/93
.\"
.Dd June 5, 1993
.Dt TYPES 5
.Os
.Sh NAME
.Nm types
.Nd system data types
.Sh SYNOPSIS
.Fd #include <sys/types.h>
.Sh DESCRIPTION
The
.Aq Pa sys/types.h
file contains the defined data types used in the kernel (most are
used throughout the system).
.Bd -literal
#ifndef _SYS_TYPES_H_
#define _SYS_TYPES_H_
/* Machine type dependent parameters. */
#include <machine/types.h>
#include <machine/ansi.h>
#include <machine/endian.h>
#if !defined(_POSIX_SOURCE) && !defined(_XOPEN_SOURCE)
typedef unsigned char u_char;
typedef unsigned short u_short;
typedef unsigned int u_int;
typedef unsigned long u_long;
typedef unsigned char unchar; /* Sys V compatibility */
typedef unsigned short ushort; /* Sys V compatibility */
typedef unsigned int uint; /* Sys V compatibility */
typedef unsigned long ulong; /* Sys V compatibility */
#endif
typedef u_int64_t u_quad_t; /* quads */
typedef int64_t quad_t;
typedef quad_t * qaddr_t;
typedef char * caddr_t; /* core address */
typedef int32_t daddr_t; /* disk address */
typedef int32_t dev_t; /* device number */
typedef u_int32_t fixpt_t; /* fixed point number */
typedef u_int32_t gid_t; /* group id */
typedef u_int32_t id_t; /* may contain pid, uid or gid */
typedef u_int32_t ino_t; /* inode number */
typedef long key_t; /* IPC key (for Sys V IPC) */
typedef u_int16_t mode_t; /* permissions */
typedef u_int16_t nlink_t; /* link count */
typedef int32_t pid_t; /* process id */
typedef u_quad_t rlim_t; /* resource limit */
typedef int32_t segsz_t; /* segment size */
typedef int32_t swblk_t; /* swap offset */
typedef u_int32_t uid_t; /* user id */
typedef u_int32_t useconds_t; /* microseconds */
typedef int32_t suseconds_t; /* microseconds (signed) */
#ifdef _BSD_CLOCK_T_
typedef _BSD_CLOCK_T_ clock_t;
#undef _BSD_CLOCK_T_
#endif
#ifdef _BSD_SIZE_T_
typedef _BSD_SIZE_T_ size_t;
#undef _BSD_SIZE_T_
#endif
#ifdef _BSD_SSIZE_T_
typedef _BSD_SSIZE_T_ ssize_t;
#undef _BSD_SSIZE_T_
#endif
#ifdef _BSD_TIME_T_
typedef _BSD_TIME_T_ time_t;
#undef _BSD_TIME_T_
#endif
#ifdef _BSD_CLOCKID_T_
typedef _BSD_CLOCKID_T_ clockid_t;
#undef _BSD_CLOCKID_T_
#endif
#ifdef _BSD_TIMER_T_
typedef _BSD_TIMER_T_ timer_t;
#undef _BSD_TIMER_T_
#endif
#ifdef _BSD_OFF_T_
typedef _BSD_OFF_T_ off_t;
#undef _BSD_OFF_T_
#endif
#if !defined(_POSIX_SOURCE) && !defined(_XOPEN_SOURCE)
/* Major, minor numbers, dev_t's. */
#define major(x) ((int32_t)(((u_int32_t)(x) >> 8) & 0xff))
#define minor(x) ((int32_t)((x) & 0xff) | (((x) & 0xffff0000) >> 8))
#define makedev(x,y) ((dev_t)((((x) & 0xff) << 8) | ((y) & 0xff) | (((y) & 0xffff00) << 8)))
#endif
#if !defined(_POSIX_SOURCE) && !defined(_XOPEN_SOURCE)
#define NBBY 8 /* number of bits in a byte */
/*
* Select uses bit masks of file descriptors in longs. These macros
* manipulate such bit fields (the filesystem macros use chars).
* FD_SETSIZE may be defined by the user, but the default here should
* be enough for most uses.
*/
#ifndef FD_SETSIZE
#define FD_SETSIZE 1024
#endif
typedef int32_t fd_mask;
#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */
#ifndef howmany
#define howmany(x, y) (((x) + ((y) - 1)) / (y))
#endif
typedef struct fd_set {
fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
} fd_set;
#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
#define FD_COPY(f, t) memcpy(t, f, sizeof(*(f)))
#define FD_ZERO(p) memset(p, 0, sizeof(*(p)))
#endif /* !defined(_POSIX_SOURCE) ... */
#endif /* !_SYS_TYPES_H_ */
.Ed
.Sh SEE ALSO
.Xr lseek 2 ,
.Xr select 2 ,
.Xr truncate 2 ,
.Xr byteorder 3 ,
.Xr time 3 ,
.Xr fs 5
.Sh HISTORY
A
.Nm
file appeared in
.At v7 .
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