1/* bits/types.h -- definitions of __*_t types underlying *_t types.
2 Copyright (C) 2002-2015 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19/*
20 * Never include this file directly; use <sys/types.h> instead.
21 */
22
23#ifndef _BITS_TYPES_H
24#define _BITS_TYPES_H 1
25
26#include <features.h>
27#include <bits/wordsize.h>
28
29/* Convenience types. */
30typedef unsigned char __u_char;
31typedef unsigned short int __u_short;
32typedef unsigned int __u_int;
33typedef unsigned long int __u_long;
34
35/* Fixed-size types, underlying types depend on word size and compiler. */
36typedef signed char __int8_t;
37typedef unsigned char __uint8_t;
38typedef signed short int __int16_t;
39typedef unsigned short int __uint16_t;
40typedef signed int __int32_t;
41typedef unsigned int __uint32_t;
42#if __WORDSIZE == 64
43typedef signed long int __int64_t;
44typedef unsigned long int __uint64_t;
45#else
46__extension__ typedef signed long long int __int64_t;
47__extension__ typedef unsigned long long int __uint64_t;
48#endif
49
50/* quad_t is also 64 bits. */
51#if __WORDSIZE == 64
52typedef long int __quad_t;
53typedef unsigned long int __u_quad_t;
54#else
55__extension__ typedef long long int __quad_t;
56__extension__ typedef unsigned long long int __u_quad_t;
57#endif
58
59
60/* The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
61 macros for each of the OS types we define below. The definitions
62 of those macros must use the following macros for underlying types.
63 We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
64 variants of each of the following integer types on this machine.
65
66 16 -- "natural" 16-bit type (always short)
67 32 -- "natural" 32-bit type (always int)
68 64 -- "natural" 64-bit type (long or long long)
69 LONG32 -- 32-bit type, traditionally long
70 QUAD -- 64-bit type, always long long
71 WORD -- natural type of __WORDSIZE bits (int or long)
72 LONGWORD -- type of __WORDSIZE bits, traditionally long
73
74 We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
75 conventional uses of `long' or `long long' type modifiers match the
76 types we define, even when a less-adorned type would be the same size.
77 This matters for (somewhat) portably writing printf/scanf formats for
78 these types, where using the appropriate l or ll format modifiers can
79 make the typedefs and the formats match up across all GNU platforms. If
80 we used `long' when it's 64 bits where `long long' is expected, then the
81 compiler would warn about the formats not matching the argument types,
82 and the programmer changing them to shut up the compiler would break the
83 program's portability.
84
85 Here we assume what is presently the case in all the GCC configurations
86 we support: long long is always 64 bits, long is always word/address size,
87 and int is always 32 bits. */
88
89#define __S16_TYPE short int
90#define __U16_TYPE unsigned short int
91#define __S32_TYPE int
92#define __U32_TYPE unsigned int
93#define __SLONGWORD_TYPE long int
94#define __ULONGWORD_TYPE unsigned long int
95#if __WORDSIZE == 32
96# define __SQUAD_TYPE __quad_t
97# define __UQUAD_TYPE __u_quad_t
98# define __SWORD_TYPE int
99# define __UWORD_TYPE unsigned int
100# define __SLONG32_TYPE long int
101# define __ULONG32_TYPE unsigned long int
102# define __S64_TYPE __quad_t
103# define __U64_TYPE __u_quad_t
104/* We want __extension__ before typedef's that use nonstandard base types
105 such as `long long' in C89 mode. */
106# define __STD_TYPE __extension__ typedef
107#elif __WORDSIZE == 64
108# define __SQUAD_TYPE long int
109# define __UQUAD_TYPE unsigned long int
110# define __SWORD_TYPE long int
111# define __UWORD_TYPE unsigned long int
112# define __SLONG32_TYPE int
113# define __ULONG32_TYPE unsigned int
114# define __S64_TYPE long int
115# define __U64_TYPE unsigned long int
116/* No need to mark the typedef with __extension__. */
117# define __STD_TYPE typedef
118#else
119# error
120#endif
121#include <bits/typesizes.h> /* Defines __*_T_TYPE macros. */
122
123
124__STD_TYPE __DEV_T_TYPE __dev_t; /* Type of device numbers. */
125__STD_TYPE __UID_T_TYPE __uid_t; /* Type of user identifications. */
126__STD_TYPE __GID_T_TYPE __gid_t; /* Type of group identifications. */
127__STD_TYPE __INO_T_TYPE __ino_t; /* Type of file serial numbers. */
128__STD_TYPE __INO64_T_TYPE __ino64_t; /* Type of file serial numbers (LFS).*/
129__STD_TYPE __MODE_T_TYPE __mode_t; /* Type of file attribute bitmasks. */
130__STD_TYPE __NLINK_T_TYPE __nlink_t; /* Type of file link counts. */
131__STD_TYPE __OFF_T_TYPE __off_t; /* Type of file sizes and offsets. */
132__STD_TYPE __OFF64_T_TYPE __off64_t; /* Type of file sizes and offsets (LFS). */
133__STD_TYPE __PID_T_TYPE __pid_t; /* Type of process identifications. */
134__STD_TYPE __FSID_T_TYPE __fsid_t; /* Type of file system IDs. */
135__STD_TYPE __CLOCK_T_TYPE __clock_t; /* Type of CPU usage counts. */
136__STD_TYPE __RLIM_T_TYPE __rlim_t; /* Type for resource measurement. */
137__STD_TYPE __RLIM64_T_TYPE __rlim64_t; /* Type for resource measurement (LFS). */
138__STD_TYPE __ID_T_TYPE __id_t; /* General type for IDs. */
139__STD_TYPE __TIME_T_TYPE __time_t; /* Seconds since the Epoch. */
140__STD_TYPE __USECONDS_T_TYPE __useconds_t; /* Count of microseconds. */
141__STD_TYPE __SUSECONDS_T_TYPE __suseconds_t; /* Signed count of microseconds. */
142
143__STD_TYPE __DADDR_T_TYPE __daddr_t; /* The type of a disk address. */
144__STD_TYPE __KEY_T_TYPE __key_t; /* Type of an IPC key. */
145
146/* Clock ID used in clock and timer functions. */
147__STD_TYPE __CLOCKID_T_TYPE __clockid_t;
148
149/* Timer ID returned by `timer_create'. */
150__STD_TYPE __TIMER_T_TYPE __timer_t;
151
152/* Type to represent block size. */
153__STD_TYPE __BLKSIZE_T_TYPE __blksize_t;
154
155/* Types from the Large File Support interface. */
156
157/* Type to count number of disk blocks. */
158__STD_TYPE __BLKCNT_T_TYPE __blkcnt_t;
159__STD_TYPE __BLKCNT64_T_TYPE __blkcnt64_t;
160
161/* Type to count file system blocks. */
162__STD_TYPE __FSBLKCNT_T_TYPE __fsblkcnt_t;
163__STD_TYPE __FSBLKCNT64_T_TYPE __fsblkcnt64_t;
164
165/* Type to count file system nodes. */
166__STD_TYPE __FSFILCNT_T_TYPE __fsfilcnt_t;
167__STD_TYPE __FSFILCNT64_T_TYPE __fsfilcnt64_t;
168
169/* Type of miscellaneous file system fields. */
170__STD_TYPE __FSWORD_T_TYPE __fsword_t;
171
172__STD_TYPE __SSIZE_T_TYPE __ssize_t; /* Type of a byte count, or error. */
173
174/* Signed long type used in system calls. */
175__STD_TYPE __SYSCALL_SLONG_TYPE __syscall_slong_t;
176/* Unsigned long type used in system calls. */
177__STD_TYPE __SYSCALL_ULONG_TYPE __syscall_ulong_t;
178
179/* These few don't really vary by system, they always correspond
180 to one of the other defined types. */
181typedef __off64_t __loff_t; /* Type of file sizes and offsets (LFS). */
182typedef __quad_t *__qaddr_t;
183typedef char *__caddr_t;
184
185/* Duplicates info from stdint.h but this is used in unistd.h. */
186__STD_TYPE __SWORD_TYPE __intptr_t;
187
188/* Duplicate info from sys/socket.h. */
189__STD_TYPE __U32_TYPE __socklen_t;
190
191
192#undef __STD_TYPE
193
194#endif /* bits/types.h */
195