4.3BSD-Reno/share/man/cat5/types.0

TYPES(5)		      1985			 TYPES(5)



NNAAMMEE
     types - primitive system data types

SSYYNNOOPPSSIISS
     ##iinncclluuddee <<ssyyss//ttyyppeess..hh>>

DDEESSCCRRIIPPTTIIOONN
     The data types defined in the include file are used in UNIX
     system code; some data of these types are accessible to user
     code:

     /*
      * Copyright (c) 1982 Regents of the University of California.
      * All rights reserved.  The Berkeley software License Agreement
      * specifies the terms and conditions for redistribution.
      *
      *       @(#)types.h	7.11 (Berkeley) 6/25/90
      */

     #ifndef _TYPES_
     #define  _TYPES_

     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 */

     #ifdef KERNEL
     #include "machine/machtypes.h"
     #else
     #include <machine/machtypes.h>
     #endif

     #ifdef   _CLOCK_T_
     typedef  _CLOCK_T_ clock_t;
     #undef   _CLOCK_T_
     #endif

     #ifdef   _TIME_T_
     typedef  _TIME_T_	time_t;
     #undef   _TIME_T_



Printed 7/27/90                May				1






TYPES(5)		      1985			 TYPES(5)



     #endif

     #ifdef   _SIZE_T_
     typedef  _SIZE_T_	size_t;
     #undef   _SIZE_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	256
     #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)))



Printed 7/27/90                May				2






TYPES(5)		      1985			 TYPES(5)



     #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_ */

     The form _d_a_d_d_r__t is used for disk addresses except in an i-
     node on disk, see _f_s(5).  Times are encoded in seconds since
     00:00:00 GMT, January 1, 1970.  The major and minor parts of
     a device code specify kind and unit number of a device and
     are installation-dependent.  Offsets are measured in bytes
     from the beginning of a file.  The _l_a_b_e_l__t variables are
     used to save the processor state while another process is
     running.

SSEEEE AALLSSOO
     fs(5), time(3), lseek(2), adb(1)






































Printed 7/27/90                May				3