1 .\" $NetBSD: types.5,v 1.3 1994/11/30 19:31:34 jtc Exp $
3 .\" Copyright (c) 1980, 1991, 1993
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34 .\" @(#)types.5 8.1 (Berkeley) 6/5/93
43 .Fd #include <sys/types.h>
47 contains the defined data types used in the kernel (most are
48 used through out the system).
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)))
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 */
69 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE)
70 #include <machine/types.h>
74 typedef _CLOCK_T_ clock_t;
79 typedef _SIZE_T_ size_t;
84 typedef _TIME_T_ time_t;
89 typedef struct _uquad { unsigned long val[2]; } u_quad;
90 typedef struct _quad { long val[2]; } quad;
92 typedef long * qaddr_t; /* should be typedef quad * qaddr_t; */
95 typedef char * caddr_t;
96 typedef u_int64_t ino_t;
100 typedef u_short uid_t;
101 typedef u_short gid_t;
103 typedef u_short nlink_t;
104 typedef u_short mode_t;
105 typedef u_long fixpt_t;
107 #ifndef _POSIX_SOURCE
108 #define NBBY 8 /* number of bits in a byte */
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).
117 #define FD_SETSIZE 1024
120 typedef long fd_mask;
121 #define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */
124 #define howmany(x, y) (((x)+((y)-1))/(y))
127 typedef struct fd_set {
128 fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
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)))
137 #endif /* !_POSIX_SOURCE */
138 #endif /* !_TYPES_H_ */