| 1 | /* bits/types.h -- definitions of __*_t types underlying *_t types. |
|---|---|
| 2 | Copyright (C) 2002-2016 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. */ |
| 30 | typedef unsigned char __u_char; |
| 31 | typedef unsigned short int __u_short; |
| 32 | typedef unsigned int __u_int; |
| 33 | typedef unsigned long int __u_long; |
| 34 | |
| 35 | /* Fixed-size types, underlying types depend on word size and compiler. */ |
| 36 | typedef signed char __int8_t; |
| 37 | typedef unsigned char __uint8_t; |
| 38 | typedef signed short int __int16_t; |
| 39 | typedef unsigned short int __uint16_t; |
| 40 | typedef signed int __int32_t; |
| 41 | typedef unsigned int __uint32_t; |
| 42 | #if __WORDSIZE == 64 |
| 43 | typedef signed long int __int64_t; |
| 44 | typedef 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 |
| 52 | typedef long int __quad_t; |
| 53 | typedef 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. */ |
| 181 | typedef __off64_t __loff_t; /* Type of file sizes and offsets (LFS). */ |
| 182 | typedef __quad_t *__qaddr_t; |
| 183 | typedef 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 |