1TYPES(5) File Formats Manual TYPES(5)
2
6 types - primitive system data types
7
9 #include <sys/types.h>
10
12 The data types defined in the include file are used in UNIX system
13 code; some data of these types are accessible to user code:
14 /* Copyright (C) 1991,1992,1994-2002,2006,2010 Free Software Foundation, Inc.
16 This file is part of the GNU C Library.
17 The GNU C Library is free software; you can redistribute it and/or
19 modify it under the terms of the GNU Lesser General Public
20 License as published by the Free Software Foundation; either
21 version 2.1 of the License, or (at your option) any later version.
22 The GNU C Library is distributed in the hope that it will be useful,
24 but WITHOUT ANY WARRANTY; without even the implied warranty of
25 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 Lesser General Public License for more details.
27 You should have received a copy of the GNU Lesser General Public
29 License along with the GNU C Library; if not, see
30 <http://www.gnu.org/licenses/>. */
31 /*
33 * POSIX Standard: 2.6 Primitive System Data Types <sys/types.h>
34 */
35 #ifndef _SYS_TYPES_H
37 #define _SYS_TYPES_H 1
38 #include <features.h>
40 __BEGIN_DECLS
42 #include <bits/types.h>
44 #ifdef __USE_BSD
46 # ifndef __u_char_defined
47 typedef __u_char u_char;
48 typedef __u_short u_short;
49 typedef __u_int u_int;
50 typedef __u_long u_long;
51 typedef __quad_t quad_t;
52 typedef __u_quad_t u_quad_t;
53 typedef __fsid_t fsid_t;
54 # define __u_char_defined
55 # endif
56 #endif
57 typedef __loff_t loff_t;
59 #ifndef __ino_t_defined
61 # ifndef __USE_FILE_OFFSET64
62 typedef __ino_t ino_t;
63 # else
64 typedef __ino64_t ino_t;
65 # endif
66 # define __ino_t_defined
67 #endif
68 #if defined __USE_LARGEFILE64 && !defined __ino64_t_defined
69 typedef __ino64_t ino64_t;
70 # define __ino64_t_defined
71 #endif
72 #ifndef __dev_t_defined
74 typedef __dev_t dev_t;
75 # define __dev_t_defined
76 #endif
77 #ifndef __gid_t_defined
79 typedef __gid_t gid_t;
80 # define __gid_t_defined
81 #endif
82 #ifndef __mode_t_defined
84 typedef __mode_t mode_t;
85 # define __mode_t_defined
86 #endif
87 #ifndef __nlink_t_defined
89 typedef __nlink_t nlink_t;
90 # define __nlink_t_defined
91 #endif
92 #ifndef __uid_t_defined
94 typedef __uid_t uid_t;
95 # define __uid_t_defined
96 #endif
97 #ifndef __off_t_defined
99 # ifndef __USE_FILE_OFFSET64
100 typedef __off_t off_t;
101 # else
102 typedef __off64_t off_t;
103 # endif
104 # define __off_t_defined
105 #endif
106 #if defined __USE_LARGEFILE64 && !defined __off64_t_defined
107 typedef __off64_t off64_t;
108 # define __off64_t_defined
109 #endif
110 #ifndef __pid_t_defined
112 typedef __pid_t pid_t;
113 # define __pid_t_defined
114 #endif
115 #if (defined __USE_SVID || defined __USE_XOPEN || defined __USE_XOPEN2K8) && !defined __id_t_defined
117 typedef __id_t id_t;
118 # define __id_t_defined
119 #endif
120 #ifndef __ssize_t_defined
122 typedef __ssize_t ssize_t;
123 # define __ssize_t_defined
124 #endif
125 #ifdef __USE_BSD
127 # ifndef __daddr_t_defined
128 typedef __daddr_t daddr_t;
129 typedef __caddr_t caddr_t;
130 # define __daddr_t_defined
131 # endif
132 #endif
133 #if (defined __USE_SVID || defined __USE_XOPEN) && !defined __key_t_defined
135 typedef __key_t key_t;
136 # define __key_t_defined
137 #endif
138 #if defined __USE_XOPEN || defined __USE_XOPEN2K8
140 # define __need_clock_t
141 #endif
142 #define __need_time_t
143 #define __need_timer_t
144 #define __need_clockid_t
145 #include <time.h>
146 #ifdef __USE_XOPEN
148 # ifndef __useconds_t_defined
149 typedef __useconds_t useconds_t;
150 # define __useconds_t_defined
151 # endif
152 # ifndef __suseconds_t_defined
153 typedef __suseconds_t suseconds_t;
154 # define __suseconds_t_defined
155 # endif
156 #endif
157 #define __need_size_t
159 #include <stddef.h>
160 #ifdef __USE_MISC
162 /* Old compatibility names for C types. */
163 typedef unsigned long int ulong;
164 typedef unsigned short int ushort;
165 typedef unsigned int uint;
166 #endif
167 /* These size-specific names are used by some of the inet code. */
169 #if !__GNUC_PREREQ (2, 7)
171 /* These types are defined by the ISO C99 header <inttypes.h>. */
173 # ifndef __int8_t_defined
174 # define __int8_t_defined
175 typedef char int8_t;
176 typedef short int int16_t;
177 typedef int int32_t;
178 # if __WORDSIZE == 64
179 typedef long int int64_t;
180 # elif __GLIBC_HAVE_LONG_LONG
181 __extension__ typedef long long int int64_t;
182 # endif
183 # endif
184 /* But these were defined by ISO C without the first `_'. */
186 typedef unsigned char u_int8_t;
187 typedef unsigned short int u_int16_t;
188 typedef unsigned int u_int32_t;
189 # if __WORDSIZE == 64
190 typedef unsigned long int u_int64_t;
191 # elif __GLIBC_HAVE_LONG_LONG
192 __extension__ typedef unsigned long long int u_int64_t;
193 # endif
194 typedef int register_t;
196 #else
198 /* For GCC 2.7 and later, we can use specific type-size attributes. */
200 # define __intN_t(N, MODE) typedef int int##N##_t __attribute__ ((__mode__ (MODE)))
201 # define __u_intN_t(N, MODE) typedef unsigned int u_int##N##_t __attribute__ ((__mode__ (MODE)))
202 # ifndef __int8_t_defined
204 # define __int8_t_defined
205 __intN_t (8, __QI__);
206 __intN_t (16, __HI__);
207 __intN_t (32, __SI__);
208 __intN_t (64, __DI__);
209 # endif
210 __u_intN_t (8, __QI__);
212 __u_intN_t (16, __HI__);
213 __u_intN_t (32, __SI__);
214 __u_intN_t (64, __DI__);
215 typedef int register_t __attribute__ ((__mode__ (__word__)));
217 /* Some code from BIND tests this macro to see if the types above are
220 defined. */
221 #endif
222 #define __BIT_TYPES_DEFINED__ 1
223 #ifdef __USE_BSD
226 /* In BSD <sys/types.h> is expected to define BYTE_ORDER. */
227 # include <endian.h>
228 /* It also defines `fd_set' and the FD_* macros for `select'. */
230 # include <sys/select.h>
231 /* BSD defines these symbols, so we follow. */
233 # include <sys/sysmacros.h>
234 #endif /* Use BSD. */
235 #if (defined __USE_UNIX98 || defined __USE_XOPEN2K8) && !defined __blksize_t_defined
238 typedef __blksize_t blksize_t;
239 # define __blksize_t_defined
240 #endif
241 /* Types from the Large File Support interface. */
243 #ifndef __USE_FILE_OFFSET64
244 # ifndef __blkcnt_t_defined
245 typedef __blkcnt_t blkcnt_t; /* Type to count number of disk blocks. */
246 # define __blkcnt_t_defined
247 # endif
248 # ifndef __fsblkcnt_t_defined
249 typedef __fsblkcnt_t fsblkcnt_t; /* Type to count file system blocks. */
250 # define __fsblkcnt_t_defined
251 # endif
252 # ifndef __fsfilcnt_t_defined
253 typedef __fsfilcnt_t fsfilcnt_t; /* Type to count file system inodes. */
254 # define __fsfilcnt_t_defined
255 # endif
256 #else
257 # ifndef __blkcnt_t_defined
258 typedef __blkcnt64_t blkcnt_t; /* Type to count number of disk blocks. */
259 # define __blkcnt_t_defined
260 # endif
261 # ifndef __fsblkcnt_t_defined
262 typedef __fsblkcnt64_t fsblkcnt_t; /* Type to count file system blocks. */
263 # define __fsblkcnt_t_defined
264 # endif
265 # ifndef __fsfilcnt_t_defined
266 typedef __fsfilcnt64_t fsfilcnt_t; /* Type to count file system inodes. */
267 # define __fsfilcnt_t_defined
268 # endif
269 #endif
270 #ifdef __USE_LARGEFILE64
272 typedef __blkcnt64_t blkcnt64_t; /* Type to count number of disk blocks. */
273 typedef __fsblkcnt64_t fsblkcnt64_t; /* Type to count file system blocks. */
274 typedef __fsfilcnt64_t fsfilcnt64_t; /* Type to count file system inodes. */
275 #endif
276 /* Now add the thread types. */
279 #if defined __USE_POSIX199506 || defined __USE_UNIX98
280 # include <bits/pthreadtypes.h>
281 #endif
282 __END_DECLS
284 #endif /* sys/types.h */
286 The form daddr_t is used for disk addresses except in an i-node on
288 disk, see filsys(5). Times are encoded in seconds since 00:00:00 GMT,
289 January 1, 1970. The major and minor parts of a device code specify
290 kind and unit number of a device and are installation-dependent. Off‐
291 sets are measured in bytes from the beginning of a file. The label_t
292 variables are used to save the processor state while another process is
293 running.
294
296 filsys(5), time(2), lseek(2), adb(1)
297 TYPES(5)