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. */ |
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 | /* Largest integral types. */ |
60 | #if __WORDSIZE == 64 |
61 | typedef long int __intmax_t; |
62 | typedef 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. */ |
190 | typedef __off64_t __loff_t; /* Type of file sizes and offsets (LFS). */ |
191 | typedef 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. */ |
202 | typedef int __sig_atomic_t; |
203 | |
204 | #undef __STD_TYPE |
205 | |
206 | #endif /* bits/types.h */ |
207 | |