1/* bits/types.h -- definitions of __*_t types underlying *_t types. 2 Copyright (C) 2002 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, write to the Free 17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 18 02111-1307 USA. */ 19 20/* 21 * Never include this file directly; use <sys/types.h> instead. 22 */ 23 24#ifndef _BITS_TYPES_H 25#define _BITS_TYPES_H 1 26 27#include <features.h> 28#include <bits/wordsize.h> 29 30#define __need_size_t 31#include <stddef.h> 32 33/* Convenience types. */ 34typedef unsigned char __u_char; 35typedef unsigned short int __u_short; 36typedef unsigned int __u_int; 37typedef unsigned long int __u_long; 38 39/* Fixed-size types, underlying types depend on word size and compiler. */ 40typedef signed char __int8_t; 41typedef unsigned char __uint8_t; 42typedef signed short int __int16_t; 43typedef unsigned short int __uint16_t; 44typedef signed int __int32_t; 45typedef unsigned int __uint32_t; 46#if __WORDSIZE == 64 47typedef signed long int __int64_t; 48typedef unsigned long int __uint64_t; 49#elif defined __GLIBC_HAVE_LONG_LONG 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, but is traditionally defined as `long long' 55 even when `long' is also 64 bits. */ 56#ifdef __GLIBC_HAVE_LONG_LONG 57__extension__ typedef long long int __quad_t; 58__extension__ typedef unsigned long long int __u_quad_t; 59#elif __WORDSIZE == 64 60typedef long int __quad_t; 61typedef unsigned long int __u_quad_t; 62#else 63typedef struct 64{ 65 long __val[2]; 66} __quad_t; 67typedef struct 68{ 69 __u_long __val[2]; 70} __u_quad_t; 71#endif 72 73 74/* The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE 75 macros for each of the OS types we define below. The definitions 76 of those macros must use the following macros for underlying types. 77 We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned 78 variants of each of the following integer types on this machine. 79 80 16 -- "natural" 16-bit type (always short) 81 32 -- "natural" 32-bit type (always int) 82 64 -- "natural" 64-bit type (long or long long) 83 LONG32 -- 32-bit type, traditionally long 84 QUAD -- 64-bit type, always long long 85 WORD -- natural type of __WORDSIZE bits (int or long) 86 LONGWORD -- type of __WORDSIZE bits, traditionally long 87 88 We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the 89 conventional uses of `long' or `long long' type modifiers match the 90 types we define, even when a less-adorned type would be the same size. 91 This matters for (somewhat) portably writing printf/scanf formats for 92 these types, where using the appropriate l or ll format modifiers can 93 make the typedefs and the formats match up across all GNU platforms. If 94 we used `long' when it's 64 bits where `long long' is expected, then the 95 compiler would warn about the formats not matching the argument types, 96 and the programmer changing them to shut up the compiler would break the 97 program's portability. 98 99 Here we assume what is presently the case in all the GCC configurations 100 we support: long long is always 64 bits, long is always word/address size, 101 and int is always 32 bits. */ 102 103#define __S16_TYPE short int 104#define __U16_TYPE unsigned short int 105#define __S32_TYPE int 106#define __U32_TYPE unsigned int 107#define __SLONGWORD_TYPE long int 108#define __ULONGWORD_TYPE unsigned long int 109#define __SQUAD_TYPE long long int 110#define __UQUAD_TYPE unsigned long long int 111#if __WORDSIZE == 32 112# define __SWORD_TYPE int 113# define __UWORD_TYPE unsigned int 114# define __SLONG32_TYPE long int 115# define __ULONG32_TYPE unsigned long int 116# define __S64_TYPE __quad_t 117# define __U64_TYPE __u_quad_t 118#elif __WORDSIZE == 64 119# 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#else 126# error 127#endif 128#include <bits/typesizes.h> /* Defines __*_T_TYPE macros. */ 129 130 131typedef __DEV_T_TYPE __dev_t; /* Type of device numbers. */ 132typedef __UID_T_TYPE __uid_t; /* Type of user identifications. */ 133typedef __GID_T_TYPE __gid_t; /* Type of group identifications. */ 134typedef __INO_T_TYPE __ino_t; /* Type of file serial numbers. */ 135typedef __INO64_T_TYPE __ino64_t; /* Type of file serial numbers (LFS). */ 136typedef __MODE_T_TYPE __mode_t; /* Type of file attribute bitmasks. */ 137typedef __NLINK_T_TYPE __nlink_t; /* Type of file link counts. */ 138typedef __OFF_T_TYPE __off_t; /* Type of file sizes and offsets. */ 139typedef __OFF64_T_TYPE __off64_t; /* Type of file sizes and offsets (LFS). */ 140typedef __PID_T_TYPE __pid_t; /* Type of process identifications. */ 141typedef __FSID_T_TYPE __fsid_t; /* Type of file system IDs. */ 142typedef __CLOCK_T_TYPE __clock_t; /* Type of CPU usage counts. */ 143typedef __RLIM_T_TYPE __rlim_t; /* Type for resource measurement. */ 144typedef __RLIM64_T_TYPE __rlim64_t; /* Type for resource measurement (LFS). */ 145typedef __ID_T_TYPE __id_t; /* General type for IDs. */ 146typedef __TIME_T_TYPE __time_t; /* Seconds since the Epoch. */ 147typedef __USECONDS_T_TYPE __useconds_t; /* Count of microseconds. */ 148typedef __SUSECONDS_T_TYPE __suseconds_t; /* Signed count of microseconds. */ 149 150typedef __DADDR_T_TYPE __daddr_t; /* The type of a disk address. */ 151typedef __SWBLK_T_TYPE __swblk_t; /* Type of a swap block maybe? */ 152typedef __KEY_T_TYPE __key_t; /* Type of an IPC key */ 153 154/* Clock ID used in clock and timer functions. */ 155typedef __CLOCKID_T_TYPE __clockid_t; 156 157/* Timer ID returned by `timer_create'. */ 158//typedef __TIMER_T_TYPE __timer_t; 159 160/* Type to represent block size. */ 161typedef __BLKSIZE_T_TYPE __blksize_t; 162 163/* Types from the Large File Support interface. */ 164 165/* Type to count number of disk blocks. */ 166typedef __BLKCNT_T_TYPE __blkcnt_t; 167typedef __BLKCNT64_T_TYPE __blkcnt64_t; 168 169/* Type to count file system blocks. */ 170typedef __FSBLKCNT_T_TYPE __fsblkcnt_t; 171typedef __FSBLKCNT64_T_TYPE __fsblkcnt64_t; 172 173/* Type to count file system nodes. */ 174typedef __FSFILCNT_T_TYPE __fsfilcnt_t; 175typedef __FSFILCNT64_T_TYPE __fsfilcnt64_t; 176 177 178/* These few don't really vary by system, they always correspond 179 to one of the other defined types. */ 180typedef __SWORD_TYPE __ssize_t; /* Type of a byte count, or error. */ 181typedef __off64_t __loff_t; /* Type of file sizes and offsets (LFS). */ 182typedef __quad_t *__qaddr_t; 183typedef char *__caddr_t; 184 185/* Duplicates info from stdint.h but this is used in unistd.h. */ 186typedef __SWORD_TYPE __intptr_t; 187 188/* Duplicate info from sys/socket.h. */ 189typedef __U32_TYPE __socklen_t; 190 191#endif /* bits/types.h */ 192