TYPES man page on 4.4BSD
[printable version]
TYPES(5) BSD File Formats Manual TYPES(5)
NAME
types — system data types
SYNOPSIS
#include <sys/types.h>
DESCRIPTION
The file sys/types.h contains the defined data types used in the kernel
(most are used through out the system).
#ifndef _SYS_TYPES_H_
#define _SYS_TYPES_H_
/* Machine type dependent parameters. */
#include <machine/ansi.h>
#include <machine/types.h>
#ifndef _POSIX_SOURCE
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 */
typedef unsigned int uint; /* 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 u_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 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 quad_t off_t; /* file offset */
typedef int32_t pid_t; /* process id */
typedef int32_t segsz_t; /* segment size */
typedef int32_t swblk_t; /* swap offset */
typedef u_int32_t uid_t; /* user id */
/*
* This belongs in unistd.h, but is placed here to ensure that programs
* casting the second parameter of lseek to off_t will get the correct
* version of lseek.
*/
#ifndef KERNEL
#include <sys/cdefs.h>
__BEGIN_DECLS
off_t lseek __P((int, off_t, int));
__END_DECLS
#endif
#ifndef _POSIX_SOURCE
/* major number */
#define major(x) ((int32_t)(((u_int32_t)(x) >> 8) & 0xff))
#define minor(x) ((int32_t)((x) & 0xff)) /* minor number */
#define makedev(x,y) ((dev_t)(((x) << 8) | (y))) /* create dev_t */
#endif
#include <machine/endian.h>
#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
#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 enough for most uses.
*/
#ifndef FD_SETSIZE
#define FD_SETSIZE 256
#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) bcopy(f, t, sizeof(*(f)))
#define FD_ZERO(p) bzero(p, sizeof(*(p)))
#if defined(__STDC__) && defined(KERNEL)
/*
* Forward structure declarations for function prototypes. We include the
* common structures that cross subsystem boundaries here; others are mostly
* used in the same place that the structure is defined.
*/
struct proc;
struct pgrp;
struct ucred;
struct rusage;
struct file;
struct buf;
struct tty;
struct uio;
#endif
#endif /* !_POSIX_SOURCE */
#endif /* !_SYS_TYPES_H_ */
SEE ALSO
fs(5), time(3), lseek(2),
HISTORY
A types file appeared in Version 7 AT&T UNIX.
4th Berkeley Distribution April 28, 1995 4th Berkeley Distribution
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