.\" $NetBSD: types.5,v 1.3 1994/11/30 19:31:34 jtc Exp $
.\"
.\" Copyright (c) 1980, 1991, 1993
.\" The Regents of the University of California. All rights reserved.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
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.\" @(#)types.5 8.1 (Berkeley) 6/5/93
.\"
.Dd AUGUST 2, 2001
.Dt TYPES 5
.Os Darwin
.Sh NAME
.Nm types
.Nd system data types
.Sh SYNOPSIS
.Fd #include <sys/types.h>
.Sh DESCRIPTION
The file
.Pa sys/types.h
contains the defined data types used in the kernel (most are
used through out the system).
.Bd -literal
#ifndef _TYPES_H_
#define _TYPES_H_
typedef short dev_t;
#ifndef _POSIX_SOURCE
/* major part of a device */
#define major(x) ((int)(((unsigned)(x)>>8)&0377))
/* minor part of a device */
#define minor(x) ((int)((x)&0377))
/* make a device number */
#define makedev(x,y) ((dev_t)(((x)<<8) | (y)))
#endif
typedef unsigned char u_char;
typedef unsigned short u_short;
typedef unsigned int u_int;
typedef unsigned long u_long;
typedef unsigned short ushort; /* Sys V compatibility */
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE)
#include <machine/types.h>
#endif
#ifdef _CLOCK_T_
typedef _CLOCK_T_ clock_t;
#undef _CLOCK_T_
#endif
#ifdef _SIZE_T_
typedef _SIZE_T_ size_t;
#undef _SIZE_T_
#endif
#ifdef _TIME_T_
typedef _TIME_T_ time_t;
#undef _TIME_T_
#endif
#ifndef _POSIX_SOURCE
typedef struct _uquad { unsigned long val[2]; } u_quad;
typedef struct _quad { long val[2]; } quad;
#endif
typedef long * qaddr_t; /* should be typedef quad * qaddr_t; */
typedef long daddr_t;
typedef char * caddr_t;
typedef u_long ino_t;
typedef long swblk_t;
typedef long segsz_t;
typedef long off_t;
typedef u_short uid_t;
typedef u_short gid_t;
typedef short pid_t;
typedef u_short nlink_t;
typedef u_short mode_t;
typedef u_long fixpt_t;
#ifndef _POSIX_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 >= NOFILE (param.h).
*/
#ifndef FD_SETSIZE
#define FD_SETSIZE 1024
#endif
typedef long 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) bcopy(f, t, sizeof(*(f)))
#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p)))
#endif /* !_POSIX_SOURCE */
#endif /* !_TYPES_H_ */
.Ed
.Sh SEE ALSO
.Xr fs 5 ,
.Xr time 3 ,
.Xr lseek 2 ,
.Xr adb 1
.Sh HISTORY
A
.Nm
file appeared in
.At v7 .