1 /* bits/types.h -- definitions of __*_t types underlying *_t types. 2 Copyright (C) 2002, 2003, 2004, 2005, 2007 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 #ifdef _LIBC 30 #include <bits/kernel_types.h> 31 #endif 32 33 /* Convenience types. */ 34 typedef unsigned char __u_char; 35 typedef unsigned short int __u_short; 36 typedef unsigned int __u_int; 37 typedef unsigned long int __u_long; 38 39 /* Fixed-size types, underlying types depend on word size and compiler. */ 40 typedef signed char __int8_t; 41 typedef unsigned char __uint8_t; 42 typedef signed short int __int16_t; 43 typedef unsigned short int __uint16_t; 44 typedef signed int __int32_t; 45 typedef unsigned int __uint32_t; 46 #if __WORDSIZE == 64 47 typedef signed long int __int64_t; 48 typedef unsigned long int __uint64_t; 49 #elif defined(__GNUC__) || defined __ICC || defined __TenDRA__ 50 __extension__ typedef signed long long int __int64_t; 51 __extension__ typedef unsigned long long int __uint64_t; 52 #endif 53 54 /* quad_t is also 64 bits. */ 55 #if __WORDSIZE == 64 56 typedef long int __quad_t; 57 typedef unsigned long int __u_quad_t; 58 #elif defined(__GNUC__) || defined __ICC || defined __TenDRA__ 59 __extension__ typedef long long int __quad_t; 60 __extension__ typedef unsigned long long int __u_quad_t; 61 #else 62 typedef struct 63 { 64 long __val[2]; 65 } __quad_t; 66 typedef struct 67 { 68 __u_long __val[2]; 69 } __u_quad_t; 70 #endif 71 72 73 /* The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE 74 macros for each of the OS types we define below. The definitions 75 of those macros must use the following macros for underlying types. 76 We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned 77 variants of each of the following integer types on this machine. 78 79 16 -- "natural" 16-bit type (always short) 80 32 -- "natural" 32-bit type (always int) 81 64 -- "natural" 64-bit type (long or long long) 82 LONG32 -- 32-bit type, traditionally long 83 QUAD -- 64-bit type, always long long 84 WORD -- natural type of __WORDSIZE bits (int or long) 85 LONGWORD -- type of __WORDSIZE bits, traditionally long 86 87 We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the 88 conventional uses of `long' or `long long' type modifiers match the 89 types we define, even when a less-adorned type would be the same size. 90 This matters for (somewhat) portably writing printf/scanf formats for 91 these types, where using the appropriate l or ll format modifiers can 92 make the typedefs and the formats match up across all GNU platforms. If 93 we used `long' when it's 64 bits where `long long' is expected, then the 94 compiler would warn about the formats not matching the argument types, 95 and the programmer changing them to shut up the compiler would break the 96 program's portability. 97 98 Here we assume what is presently the case in all the GCC configurations 99 we support: long long is always 64 bits, long is always word/address size, 100 and int is always 32 bits. */ 101 102 #define __S16_TYPE short int 103 #define __U16_TYPE unsigned short int 104 #define __S32_TYPE int 105 #define __U32_TYPE unsigned int 106 #define __SLONGWORD_TYPE long int 107 #define __ULONGWORD_TYPE unsigned long int 108 #if __WORDSIZE == 32 109 # define __SQUAD_TYPE __quad_t 110 # define __UQUAD_TYPE __u_quad_t 111 # define __SWORD_TYPE int 112 # define __UWORD_TYPE unsigned int 113 # define __SLONG32_TYPE long int 114 # define __ULONG32_TYPE unsigned long int 115 # define __S64_TYPE __quad_t 116 # define __U64_TYPE __u_quad_t 117 /* We want __extension__ before typedef's that use nonstandard base types 118 such as `long long' in C89 mode. */ 119 # define __STD_TYPE __extension__ typedef 120 #elif __WORDSIZE == 64 121 # define __SQUAD_TYPE long int 122 # define __UQUAD_TYPE unsigned long int 123 # define __SWORD_TYPE long int 124 # define __UWORD_TYPE unsigned long int 125 # define __SLONG32_TYPE int 126 # define __ULONG32_TYPE unsigned int 127 # define __S64_TYPE long int 128 # define __U64_TYPE unsigned long int 129 /* No need to mark the typedef with __extension__. */ 130 # define __STD_TYPE typedef 131 #else 132 # error your machine is neither 32 bit or 64 bit ... it must be magical 133 #endif 134 #include <bits/typesizes.h> /* Defines __*_T_TYPE macros. */ 135 136 137 __STD_TYPE __DEV_T_TYPE __dev_t; /* Type of device numbers. */ 138 __STD_TYPE __UID_T_TYPE __uid_t; /* Type of user identifications. */ 139 __STD_TYPE __GID_T_TYPE __gid_t; /* Type of group identifications. */ 140 __STD_TYPE __INO_T_TYPE __ino_t; /* Type of file serial numbers. */ 141 __STD_TYPE __INO64_T_TYPE __ino64_t; /* Type of file serial numbers (LFS).*/ 142 __STD_TYPE __MODE_T_TYPE __mode_t; /* Type of file attribute bitmasks. */ 143 __STD_TYPE __NLINK_T_TYPE __nlink_t; /* Type of file link counts. */ 144 __STD_TYPE __OFF_T_TYPE __off_t; /* Type of file sizes and offsets. */ 145 __STD_TYPE __OFF64_T_TYPE __off64_t; /* Type of file sizes and offsets (LFS). */ 146 __STD_TYPE __PID_T_TYPE __pid_t; /* Type of process identifications. */ 147 __STD_TYPE __FSID_T_TYPE __fsid_t; /* Type of file system IDs. */ 148 __STD_TYPE __CLOCK_T_TYPE __clock_t; /* Type of CPU usage counts. */ 149 __STD_TYPE __RLIM_T_TYPE __rlim_t; /* Type for resource measurement. */ 150 __STD_TYPE __RLIM64_T_TYPE __rlim64_t; /* Type for resource measurement (LFS). */ 151 __STD_TYPE __ID_T_TYPE __id_t; /* General type for IDs. */ 152 __STD_TYPE __TIME_T_TYPE __time_t; /* Seconds since the Epoch. */ 153 __STD_TYPE __USECONDS_T_TYPE __useconds_t; /* Count of microseconds. */ 154 __STD_TYPE __SUSECONDS_T_TYPE __suseconds_t; /* Signed count of microseconds. */ 155 156 __STD_TYPE __DADDR_T_TYPE __daddr_t; /* The type of a disk address. */ 157 __STD_TYPE __SWBLK_T_TYPE __swblk_t; /* Type of a swap block maybe? */ 158 __STD_TYPE __KEY_T_TYPE __key_t; /* Type of an IPC key. */ 159 160 /* Clock ID used in clock and timer functions. */ 161 __STD_TYPE __CLOCKID_T_TYPE __clockid_t; 162 163 /* Timer ID returned by `timer_create'. */ 164 __STD_TYPE __TIMER_T_TYPE __timer_t; 165 166 /* Type to represent block size. */ 167 __STD_TYPE __BLKSIZE_T_TYPE __blksize_t; 168 169 /* Types from the Large File Support interface. */ 170 171 /* Type to count number of disk blocks. */ 172 __STD_TYPE __BLKCNT_T_TYPE __blkcnt_t; 173 __STD_TYPE __BLKCNT64_T_TYPE __blkcnt64_t; 174 175 /* Type to count file system blocks. */ 176 __STD_TYPE __FSBLKCNT_T_TYPE __fsblkcnt_t; 177 __STD_TYPE __FSBLKCNT64_T_TYPE __fsblkcnt64_t; 178 179 /* Type to count file system nodes. */ 180 __STD_TYPE __FSFILCNT_T_TYPE __fsfilcnt_t; 181 __STD_TYPE __FSFILCNT64_T_TYPE __fsfilcnt64_t; 182 183 __STD_TYPE __SSIZE_T_TYPE __ssize_t; /* Type of a byte count, or error. */ 184 185 /* These few don't really vary by system, they always correspond 186 to one of the other defined types. */ 187 typedef __off64_t __loff_t; /* Type of file sizes and offsets (LFS). */ 188 typedef __quad_t *__qaddr_t; 189 typedef char *__caddr_t; 190 191 /* Duplicates info from stdint.h but this is used in unistd.h. */ 192 __STD_TYPE __SWORD_TYPE __intptr_t; 193 194 /* Duplicate info from sys/socket.h. */ 195 __STD_TYPE __U32_TYPE __socklen_t; 196 197 198 #undef __STD_TYPE 199 200 #endif /* bits/types.h */ 201