1 | /* bits/types.h -- definitions of __*_t types underlying *_t types. |
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2 | Copyright (C) 2002-2020 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 | <https://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 | #include <bits/timesize.h> |

29 | |

30 | /* Convenience types. */ |

31 | typedef unsigned char __u_char; |

32 | typedef unsigned short int __u_short; |

33 | typedef unsigned int __u_int; |

34 | typedef unsigned long int __u_long; |

35 | |

36 | /* Fixed-size types, underlying types depend on word size and compiler. */ |

37 | typedef signed char __int8_t; |

38 | typedef unsigned char __uint8_t; |

39 | typedef signed short int __int16_t; |

40 | typedef unsigned short int __uint16_t; |

41 | typedef signed int __int32_t; |

42 | typedef unsigned int __uint32_t; |

43 | #if __WORDSIZE == 64 |

44 | typedef signed long int __int64_t; |

45 | typedef unsigned long int __uint64_t; |

46 | #else |

47 | __extension__ typedef signed long long int __int64_t; |

48 | __extension__ typedef unsigned long long int __uint64_t; |

49 | #endif |

50 | |

51 | /* Smallest types with at least a given width. */ |

52 | typedef __int8_t __int_least8_t; |

53 | typedef __uint8_t __uint_least8_t; |

54 | typedef __int16_t __int_least16_t; |

55 | typedef __uint16_t __uint_least16_t; |

56 | typedef __int32_t __int_least32_t; |

57 | typedef __uint32_t __uint_least32_t; |

58 | typedef __int64_t __int_least64_t; |

59 | typedef __uint64_t __uint_least64_t; |

60 | |

61 | /* quad_t is also 64 bits. */ |

62 | #if __WORDSIZE == 64 |

63 | typedef long int __quad_t; |

64 | typedef unsigned long int __u_quad_t; |

65 | #else |

66 | __extension__ typedef long long int __quad_t; |

67 | __extension__ typedef unsigned long long int __u_quad_t; |

68 | #endif |

69 | |

70 | /* Largest integral types. */ |

71 | #if __WORDSIZE == 64 |

72 | typedef long int __intmax_t; |

73 | typedef unsigned long int __uintmax_t; |

74 | #else |

75 | __extension__ typedef long long int __intmax_t; |

76 | __extension__ typedef unsigned long long int __uintmax_t; |

77 | #endif |

78 | |

79 | |

80 | /* The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE |

81 | macros for each of the OS types we define below. The definitions |

82 | of those macros must use the following macros for underlying types. |

83 | We define __S<SIZE>_TYPE and __U<SIZE>_TYPE for the signed and unsigned |

84 | variants of each of the following integer types on this machine. |

85 | |

86 | 16 -- "natural" 16-bit type (always short) |

87 | 32 -- "natural" 32-bit type (always int) |

88 | 64 -- "natural" 64-bit type (long or long long) |

89 | LONG32 -- 32-bit type, traditionally long |

90 | QUAD -- 64-bit type, traditionally long long |

91 | WORD -- natural type of __WORDSIZE bits (int or long) |

92 | LONGWORD -- type of __WORDSIZE bits, traditionally long |

93 | |

94 | We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the |

95 | conventional uses of `long' or `long long' type modifiers match the |

96 | types we define, even when a less-adorned type would be the same size. |

97 | This matters for (somewhat) portably writing printf/scanf formats for |

98 | these types, where using the appropriate l or ll format modifiers can |

99 | make the typedefs and the formats match up across all GNU platforms. If |

100 | we used `long' when it's 64 bits where `long long' is expected, then the |

101 | compiler would warn about the formats not matching the argument types, |

102 | and the programmer changing them to shut up the compiler would break the |

103 | program's portability. |

104 | |

105 | Here we assume what is presently the case in all the GCC configurations |

106 | we support: long long is always 64 bits, long is always word/address size, |

107 | and int is always 32 bits. */ |

108 | |

109 | #define __S16_TYPE short int |

110 | #define __U16_TYPE unsigned short int |

111 | #define __S32_TYPE int |

112 | #define __U32_TYPE unsigned int |

113 | #define __SLONGWORD_TYPE long int |

114 | #define __ULONGWORD_TYPE unsigned long int |

115 | #if __WORDSIZE == 32 |

116 | # define __SQUAD_TYPE __int64_t |

117 | # define __UQUAD_TYPE __uint64_t |

118 | # define __SWORD_TYPE int |

119 | # define __UWORD_TYPE unsigned int |

120 | # define __SLONG32_TYPE long int |

121 | # define __ULONG32_TYPE unsigned long int |

122 | # define __S64_TYPE __int64_t |

123 | # define __U64_TYPE __uint64_t |

124 | /* We want __extension__ before typedef's that use nonstandard base types |

125 | such as `long long' in C89 mode. */ |

126 | # define __STD_TYPE __extension__ typedef |

127 | #elif __WORDSIZE == 64 |

128 | # define __SQUAD_TYPE long int |

129 | # define __UQUAD_TYPE unsigned long int |

130 | # define __SWORD_TYPE long int |

131 | # define __UWORD_TYPE unsigned long int |

132 | # define __SLONG32_TYPE int |

133 | # define __ULONG32_TYPE unsigned int |

134 | # define __S64_TYPE long int |

135 | # define __U64_TYPE unsigned long int |

136 | /* No need to mark the typedef with __extension__. */ |

137 | # define __STD_TYPE typedef |

138 | #else |

139 | # error |

140 | #endif |

141 | #include <bits/typesizes.h> /* Defines __*_T_TYPE macros. */ |

142 | #include <bits/time64.h> /* Defines __TIME*_T_TYPE macros. */ |

143 | |

144 | |

145 | __STD_TYPE __DEV_T_TYPE __dev_t; /* Type of device numbers. */ |

146 | __STD_TYPE __UID_T_TYPE __uid_t; /* Type of user identifications. */ |

147 | __STD_TYPE __GID_T_TYPE __gid_t; /* Type of group identifications. */ |

148 | __STD_TYPE __INO_T_TYPE __ino_t; /* Type of file serial numbers. */ |

149 | __STD_TYPE __INO64_T_TYPE __ino64_t; /* Type of file serial numbers (LFS).*/ |

150 | __STD_TYPE __MODE_T_TYPE __mode_t; /* Type of file attribute bitmasks. */ |

151 | __STD_TYPE __NLINK_T_TYPE __nlink_t; /* Type of file link counts. */ |

152 | __STD_TYPE __OFF_T_TYPE __off_t; /* Type of file sizes and offsets. */ |

153 | __STD_TYPE __OFF64_T_TYPE __off64_t; /* Type of file sizes and offsets (LFS). */ |

154 | __STD_TYPE __PID_T_TYPE __pid_t; /* Type of process identifications. */ |

155 | __STD_TYPE __FSID_T_TYPE __fsid_t; /* Type of file system IDs. */ |

156 | __STD_TYPE __CLOCK_T_TYPE __clock_t; /* Type of CPU usage counts. */ |

157 | __STD_TYPE __RLIM_T_TYPE __rlim_t; /* Type for resource measurement. */ |

158 | __STD_TYPE __RLIM64_T_TYPE __rlim64_t; /* Type for resource measurement (LFS). */ |

159 | __STD_TYPE __ID_T_TYPE __id_t; /* General type for IDs. */ |

160 | __STD_TYPE __TIME_T_TYPE __time_t; /* Seconds since the Epoch. */ |

161 | __STD_TYPE __USECONDS_T_TYPE __useconds_t; /* Count of microseconds. */ |

162 | __STD_TYPE __SUSECONDS_T_TYPE __suseconds_t; /* Signed count of microseconds. */ |

163 | |

164 | __STD_TYPE __DADDR_T_TYPE __daddr_t; /* The type of a disk address. */ |

165 | __STD_TYPE __KEY_T_TYPE __key_t; /* Type of an IPC key. */ |

166 | |

167 | /* Clock ID used in clock and timer functions. */ |

168 | __STD_TYPE __CLOCKID_T_TYPE __clockid_t; |

169 | |

170 | /* Timer ID returned by `timer_create'. */ |

171 | __STD_TYPE __TIMER_T_TYPE __timer_t; |

172 | |

173 | /* Type to represent block size. */ |

174 | __STD_TYPE __BLKSIZE_T_TYPE __blksize_t; |

175 | |

176 | /* Types from the Large File Support interface. */ |

177 | |

178 | /* Type to count number of disk blocks. */ |

179 | __STD_TYPE __BLKCNT_T_TYPE __blkcnt_t; |

180 | __STD_TYPE __BLKCNT64_T_TYPE __blkcnt64_t; |

181 | |

182 | /* Type to count file system blocks. */ |

183 | __STD_TYPE __FSBLKCNT_T_TYPE __fsblkcnt_t; |

184 | __STD_TYPE __FSBLKCNT64_T_TYPE __fsblkcnt64_t; |

185 | |

186 | /* Type to count file system nodes. */ |

187 | __STD_TYPE __FSFILCNT_T_TYPE __fsfilcnt_t; |

188 | __STD_TYPE __FSFILCNT64_T_TYPE __fsfilcnt64_t; |

189 | |

190 | /* Type of miscellaneous file system fields. */ |

191 | __STD_TYPE __FSWORD_T_TYPE __fsword_t; |

192 | |

193 | __STD_TYPE __SSIZE_T_TYPE __ssize_t; /* Type of a byte count, or error. */ |

194 | |

195 | /* Signed long type used in system calls. */ |

196 | __STD_TYPE __SYSCALL_SLONG_TYPE __syscall_slong_t; |

197 | /* Unsigned long type used in system calls. */ |

198 | __STD_TYPE __SYSCALL_ULONG_TYPE __syscall_ulong_t; |

199 | |

200 | /* These few don't really vary by system, they always correspond |

201 | to one of the other defined types. */ |

202 | typedef __off64_t __loff_t; /* Type of file sizes and offsets (LFS). */ |

203 | typedef char *__caddr_t; |

204 | |

205 | /* Duplicates info from stdint.h but this is used in unistd.h. */ |

206 | __STD_TYPE __SWORD_TYPE __intptr_t; |

207 | |

208 | /* Duplicate info from sys/socket.h. */ |

209 | __STD_TYPE __U32_TYPE __socklen_t; |

210 | |

211 | /* C99: An integer type that can be accessed as an atomic entity, |

212 | even in the presence of asynchronous interrupts. |

213 | It is not currently necessary for this to be machine-specific. */ |

214 | typedef int __sig_atomic_t; |

215 | |

216 | /* Seconds since the Epoch, visible to user code when time_t is too |

217 | narrow only for consistency with the old way of widening too-narrow |

218 | types. User code should never use __time64_t. */ |

219 | #if __TIMESIZE == 64 && defined __LIBC |

220 | # define __time64_t __time_t |

221 | #elif __TIMESIZE != 64 |

222 | __STD_TYPE __TIME64_T_TYPE __time64_t; |

223 | #endif |

224 | |

225 | #undef __STD_TYPE |

226 | |

227 | #endif /* bits/types.h */ |

228 |