1/* bits/types.h -- definitions of __*_t types underlying *_t types.
2 Copyright (C) 2002-2018 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/* Smallest types with at least a given width. */
51typedef __int8_t __int_least8_t;
52typedef __uint8_t __uint_least8_t;
53typedef __int16_t __int_least16_t;
54typedef __uint16_t __uint_least16_t;
55typedef __int32_t __int_least32_t;
56typedef __uint32_t __uint_least32_t;
57typedef __int64_t __int_least64_t;
58typedef __uint64_t __uint_least64_t;
59
60/* quad_t is also 64 bits. */
61#if __WORDSIZE == 64
62typedef long int __quad_t;
63typedef unsigned long int __u_quad_t;
64#else
65__extension__ typedef long long int __quad_t;
66__extension__ typedef unsigned long long int __u_quad_t;
67#endif
68
69/* Largest integral types. */
70#if __WORDSIZE == 64
71typedef long int __intmax_t;
72typedef unsigned long int __uintmax_t;
73#else
74__extension__ typedef long long int __intmax_t;
75__extension__ typedef unsigned long long int __uintmax_t;
76#endif
77
78
79/* The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
80 macros for each of the OS types we define below. The definitions
81 of those macros must use the following macros for underlying types.
82 We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned
83 variants of each of the following integer types on this machine.
84
85 16 -- "natural" 16-bit type (always short)
86 32 -- "natural" 32-bit type (always int)
87 64 -- "natural" 64-bit type (long or long long)
88 LONG32 -- 32-bit type, traditionally long
89 QUAD -- 64-bit type, always long long
90 WORD -- natural type of __WORDSIZE bits (int or long)
91 LONGWORD -- type of __WORDSIZE bits, traditionally long
92
93 We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
94 conventional uses of `long' or `long long' type modifiers match the
95 types we define, even when a less-adorned type would be the same size.
96 This matters for (somewhat) portably writing printf/scanf formats for
97 these types, where using the appropriate l or ll format modifiers can
98 make the typedefs and the formats match up across all GNU platforms. If
99 we used `long' when it's 64 bits where `long long' is expected, then the
100 compiler would warn about the formats not matching the argument types,
101 and the programmer changing them to shut up the compiler would break the
102 program's portability.
103
104 Here we assume what is presently the case in all the GCC configurations
105 we support: long long is always 64 bits, long is always word/address size,
106 and int is always 32 bits. */
107
108#define __S16_TYPE short int
109#define __U16_TYPE unsigned short int
110#define __S32_TYPE int
111#define __U32_TYPE unsigned int
112#define __SLONGWORD_TYPE long int
113#define __ULONGWORD_TYPE unsigned long int
114#if __WORDSIZE == 32
115# define __SQUAD_TYPE __quad_t
116# define __UQUAD_TYPE __u_quad_t
117# define __SWORD_TYPE int
118# define __UWORD_TYPE unsigned int
119# define __SLONG32_TYPE long int
120# define __ULONG32_TYPE unsigned long int
121# define __S64_TYPE __quad_t
122# define __U64_TYPE __u_quad_t
123/* We want __extension__ before typedef's that use nonstandard base types
124 such as `long long' in C89 mode. */
125# define __STD_TYPE __extension__ typedef
126#elif __WORDSIZE == 64
127# define __SQUAD_TYPE long int
128# define __UQUAD_TYPE unsigned long int
129# define __SWORD_TYPE long int
130# define __UWORD_TYPE unsigned long int
131# define __SLONG32_TYPE int
132# define __ULONG32_TYPE unsigned int
133# define __S64_TYPE long int
134# define __U64_TYPE unsigned long int
135/* No need to mark the typedef with __extension__. */
136# define __STD_TYPE typedef
137#else
138# error
139#endif
140#include <bits/typesizes.h> /* Defines __*_T_TYPE macros. */
141
142
143__STD_TYPE __DEV_T_TYPE __dev_t; /* Type of device numbers. */
144__STD_TYPE __UID_T_TYPE __uid_t; /* Type of user identifications. */
145__STD_TYPE __GID_T_TYPE __gid_t; /* Type of group identifications. */
146__STD_TYPE __INO_T_TYPE __ino_t; /* Type of file serial numbers. */
147__STD_TYPE __INO64_T_TYPE __ino64_t; /* Type of file serial numbers (LFS).*/
148__STD_TYPE __MODE_T_TYPE __mode_t; /* Type of file attribute bitmasks. */
149__STD_TYPE __NLINK_T_TYPE __nlink_t; /* Type of file link counts. */
150__STD_TYPE __OFF_T_TYPE __off_t; /* Type of file sizes and offsets. */
151__STD_TYPE __OFF64_T_TYPE __off64_t; /* Type of file sizes and offsets (LFS). */
152__STD_TYPE __PID_T_TYPE __pid_t; /* Type of process identifications. */
153__STD_TYPE __FSID_T_TYPE __fsid_t; /* Type of file system IDs. */
154__STD_TYPE __CLOCK_T_TYPE __clock_t; /* Type of CPU usage counts. */
155__STD_TYPE __RLIM_T_TYPE __rlim_t; /* Type for resource measurement. */
156__STD_TYPE __RLIM64_T_TYPE __rlim64_t; /* Type for resource measurement (LFS). */
157__STD_TYPE __ID_T_TYPE __id_t; /* General type for IDs. */
158__STD_TYPE __TIME_T_TYPE __time_t; /* Seconds since the Epoch. */
159__STD_TYPE __USECONDS_T_TYPE __useconds_t; /* Count of microseconds. */
160__STD_TYPE __SUSECONDS_T_TYPE __suseconds_t; /* Signed count of microseconds. */
161
162__STD_TYPE __DADDR_T_TYPE __daddr_t; /* The type of a disk address. */
163__STD_TYPE __KEY_T_TYPE __key_t; /* Type of an IPC key. */
164
165/* Clock ID used in clock and timer functions. */
166__STD_TYPE __CLOCKID_T_TYPE __clockid_t;
167
168/* Timer ID returned by `timer_create'. */
169__STD_TYPE __TIMER_T_TYPE __timer_t;
170
171/* Type to represent block size. */
172__STD_TYPE __BLKSIZE_T_TYPE __blksize_t;
173
174/* Types from the Large File Support interface. */
175
176/* Type to count number of disk blocks. */
177__STD_TYPE __BLKCNT_T_TYPE __blkcnt_t;
178__STD_TYPE __BLKCNT64_T_TYPE __blkcnt64_t;
179
180/* Type to count file system blocks. */
181__STD_TYPE __FSBLKCNT_T_TYPE __fsblkcnt_t;
182__STD_TYPE __FSBLKCNT64_T_TYPE __fsblkcnt64_t;
183
184/* Type to count file system nodes. */
185__STD_TYPE __FSFILCNT_T_TYPE __fsfilcnt_t;
186__STD_TYPE __FSFILCNT64_T_TYPE __fsfilcnt64_t;
187
188/* Type of miscellaneous file system fields. */
189__STD_TYPE __FSWORD_T_TYPE __fsword_t;
190
191__STD_TYPE __SSIZE_T_TYPE __ssize_t; /* Type of a byte count, or error. */
192
193/* Signed long type used in system calls. */
194__STD_TYPE __SYSCALL_SLONG_TYPE __syscall_slong_t;
195/* Unsigned long type used in system calls. */
196__STD_TYPE __SYSCALL_ULONG_TYPE __syscall_ulong_t;
197
198/* These few don't really vary by system, they always correspond
199 to one of the other defined types. */
200typedef __off64_t __loff_t; /* Type of file sizes and offsets (LFS). */
201typedef char *__caddr_t;
202
203/* Duplicates info from stdint.h but this is used in unistd.h. */
204__STD_TYPE __SWORD_TYPE __intptr_t;
205
206/* Duplicate info from sys/socket.h. */
207__STD_TYPE __U32_TYPE __socklen_t;
208
209/* C99: An integer type that can be accessed as an atomic entity,
210 even in the presence of asynchronous interrupts.
211 It is not currently necessary for this to be machine-specific. */
212typedef int __sig_atomic_t;
213
214#undef __STD_TYPE
215
216#endif /* bits/types.h */
217