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. */ 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