bsd/man/man5/types.5

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  34 .\"     @(#)types.5     8.1 (Berkeley) 6/5/93
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  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 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE)
  70 #include <machine/types.h>
  71 #endif
  72
  73 #ifdef  _CLOCK_T_
  74 typedef _CLOCK_T_       clock_t;
  75 #undef  _CLOCK_T_
  76 #endif
  77
  78 #ifdef  _SIZE_T_
  79 typedef _SIZE_T_        size_t;
  80 #undef  _SIZE_T_
  81 #endif
  82
  83 #ifdef  _TIME_T_
  84 typedef _TIME_T_        time_t;
  85 #undef  _TIME_T_
  86 #endif
  87
  88 #ifndef _POSIX_SOURCE
  89 typedef struct  _uquad { unsigned long val[2]; } u_quad;
  90 typedef struct  _quad { long val[2]; } quad;
  91 #endif
  92 typedef long *  qaddr_t;        /* should be typedef quad * qaddr_t; */
  93
  94 typedef long    daddr_t;
  95 typedef char *  caddr_t;
  96 typedef u_long  ino_t;
  97 typedef long    swblk_t;
  98 typedef long    segsz_t;
  99 typedef long    off_t;
 100 typedef u_short uid_t;
 101 typedef u_short gid_t;
 102 typedef short   pid_t;
 103 typedef u_short nlink_t;
 104 typedef u_short mode_t;
 105 typedef u_long  fixpt_t;
 106
 107 #ifndef _POSIX_SOURCE
 108 #define NBBY    8               /* number of bits in a byte */
 109
 110 /*
 111  * Select uses bit masks of file descriptors in longs.  These macros
 112  * manipulate such bit fields (the filesystem macros use chars).
 113  * FD_SETSIZE may be defined by the user, but the default here should
 114  * be >= NOFILE (param.h).
 115  */
 116 #ifndef FD_SETSIZE
 117 #define FD_SETSIZE      1024
 118 #endif
 119
 120 typedef long    fd_mask;
 121 #define NFDBITS (sizeof(fd_mask) * NBBY)        /* bits per mask */
 122
 123 #ifndef howmany
 124 #define howmany(x, y)   (((x)+((y)-1))/(y))
 125 #endif
 126
 127 typedef struct fd_set {
 128         fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
 129 } fd_set;
 130
 131 #define FD_SET(n, p)    ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
 132 #define FD_CLR(n, p)    ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
 133 #define FD_ISSET(n, p)  ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
 134 #define FD_COPY(f, t)   bcopy(f, t, sizeof(*(f)))
 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 adb 1 ,
 142 .Xr lseek 2 ,
 143 .Xr time 3 ,
 144 .Xr fs 5
 145 .Sh HISTORY
 146 A
 147 .Nm
 148 file appeared in
 149 .At v7 .