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