[apple/xnu.git] / bsd / man / man5 / types.5

.\"	$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.
.\"
.\" 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. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"	This product includes software developed by the University of
.\"	California, Berkeley and its contributors.
.\" 4. 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 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 */

#include <machine/ansi.h>
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_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_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 .
Commit	Line	Data
9bccf70c A	1	.\" $NetBSD: types.5,v 1.3 1994/11/30 19:31:34 jtc Exp $
	2	.\"
	3	.\" Copyright (c) 1980, 1991, 1993
	4	.\" The Regents of the University of California. All rights reserved.
	5	.\"
	6	.\" Redistribution and use in source and binary forms, with or without
	7	.\" modification, are permitted provided that the following conditions
	8	.\" are met:
	9	.\" 1. Redistributions of source code must retain the above copyright
	10	.\" notice, this list of conditions and the following disclaimer.
	11	.\" 2. Redistributions in binary form must reproduce the above copyright
	12	.\" notice, this list of conditions and the following disclaimer in the
	13	.\" documentation and/or other materials provided with the distribution.
	14	.\" 3. All advertising materials mentioning features or use of this software
	15	.\" must display the following acknowledgement:
	16	.\" This product includes software developed by the University of
	17	.\" California, Berkeley and its contributors.
	18	.\" 4. Neither the name of the University nor the names of its contributors
	19	.\" may be used to endorse or promote products derived from this software
	20	.\" without specific prior written permission.
	21	.\"
	22	.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	23	.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	24	.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	25	.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	26	.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	27	.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	28	.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	29	.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	30	.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	31	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	32	.\" SUCH DAMAGE.
	33	.\"
	34	.\" @(#)types.5 8.1 (Berkeley) 6/5/93
	35	.\"
	36	.Dd AUGUST 2, 2001
	37	.Dt TYPES 5
	38	.Os Darwin
	39	.Sh NAME
	40	.Nm types
	41	.Nd system data types
	42	.Sh SYNOPSIS
	43	.Fd #include <sys/types.h>
	44	.Sh DESCRIPTION
	45	The file
	46	.Pa sys/types.h
	47	contains the defined data types used in the kernel (most are
	48	used through out the system).
	49	.Bd -literal
	50	#ifndef _TYPES_H_
	51	#define _TYPES_H_
	52
	53	typedef short dev_t;
	54	#ifndef _POSIX_SOURCE
	55	/* major part of a device */
	56	#define major(x) ((int)(((unsigned)(x)>>8)&0377))
	57	/* minor part of a device */
	58	#define minor(x) ((int)((x)&0377))
	59	/* make a device number */
	60	#define makedev(x,y) ((dev_t)(((x)<<8) \| (y)))
	61	#endif
	62
	63	typedef unsigned char u_char;
	64	typedef unsigned short u_short;
65	typedef unsigned int u_int;
66	typedef unsigned long u_long;
67	typedef unsigned short ushort; /* Sys V compatibility */
68
69	#include <machine/ansi.h>
70	#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
71	#include <machine/types.h>
72	#endif
73
74	#ifdef _CLOCK_T_
75	typedef _CLOCK_T_ clock_t;
76	#undef _CLOCK_T_
77	#endif
78
79	#ifdef _SIZE_T_
80	typedef _SIZE_T_ size_t;
81	#undef _SIZE_T_
82	#endif
83
84	#ifdef _TIME_T_
85	typedef _TIME_T_ time_t;
86	#undef _TIME_T_
87	#endif
88
89	#ifndef _POSIX_SOURCE
90	typedef struct _uquad { unsigned long val[2]; } u_quad;
91	typedef struct _quad { long val[2]; } quad;
92	#endif
93	typedef long * qaddr_t; /* should be typedef quad * qaddr_t; */
94
95	typedef long daddr_t;
96	typedef char * caddr_t;
97	typedef u_long ino_t;
98	typedef long swblk_t;
99	typedef long segsz_t;
100	typedef long off_t;
101	typedef u_short uid_t;
102	typedef u_short gid_t;
103	typedef short pid_t;
104	typedef u_short nlink_t;
105	typedef u_short mode_t;
106	typedef u_long fixpt_t;
107
108	#ifndef _POSIX_SOURCE
109	#define NBBY 8 /* number of bits in a byte */
110
111	/*
112	* Select uses bit masks of file descriptors in longs. These macros
113	* manipulate such bit fields (the filesystem macros use chars).
114	* FD_SETSIZE may be defined by the user, but the default here should
115	* be >= NOFILE (param.h).
116	*/
117	#ifndef FD_SETSIZE
118	#define FD_SETSIZE 1024
119	#endif
120
121	typedef long fd_mask;
122	#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */
123
124	#ifndef howmany
125	#define howmany(x, y) (((x)+((y)-1))/(y))
126	#endif
127
128	typedef struct fd_set {
129	fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
130	} fd_set;
131
132	#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] \|= (1 << ((n) % NFDBITS)))
133	#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
134	#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
135	#define FD_ZERO(p) bzero((char )(p), sizeof((p)))
136
137	#endif /* !_POSIX_SOURCE */
138	#endif /* !_TYPES_H_ */
139	.Ed
140	.Sh SEE ALSO
141	.Xr fs 5 ,
142	.Xr time 3 ,
143	.Xr lseek 2 ,
144	.Xr adb 1
145	.Sh HISTORY
146	A
147	.Nm
148	file appeared in
149	.At v7 .