xref: /linux-6.15/include/linux/types.h (revision 4e57b681)
1 #ifndef _LINUX_TYPES_H
2 #define _LINUX_TYPES_H
3 
4 #ifdef	__KERNEL__
5 #include <linux/config.h>
6 
7 #define BITS_TO_LONGS(bits) \
8 	(((bits)+BITS_PER_LONG-1)/BITS_PER_LONG)
9 #define DECLARE_BITMAP(name,bits) \
10 	unsigned long name[BITS_TO_LONGS(bits)]
11 #endif
12 
13 #include <linux/posix_types.h>
14 #include <asm/types.h>
15 
16 #ifndef __KERNEL_STRICT_NAMES
17 
18 typedef __u32 __kernel_dev_t;
19 
20 typedef __kernel_fd_set		fd_set;
21 typedef __kernel_dev_t		dev_t;
22 typedef __kernel_ino_t		ino_t;
23 typedef __kernel_mode_t		mode_t;
24 typedef __kernel_nlink_t	nlink_t;
25 typedef __kernel_off_t		off_t;
26 typedef __kernel_pid_t		pid_t;
27 typedef __kernel_daddr_t	daddr_t;
28 typedef __kernel_key_t		key_t;
29 typedef __kernel_suseconds_t	suseconds_t;
30 typedef __kernel_timer_t	timer_t;
31 typedef __kernel_clockid_t	clockid_t;
32 typedef __kernel_mqd_t		mqd_t;
33 
34 #ifdef __KERNEL__
35 typedef __kernel_uid32_t	uid_t;
36 typedef __kernel_gid32_t	gid_t;
37 typedef __kernel_uid16_t        uid16_t;
38 typedef __kernel_gid16_t        gid16_t;
39 
40 #ifdef CONFIG_UID16
41 /* This is defined by include/asm-{arch}/posix_types.h */
42 typedef __kernel_old_uid_t	old_uid_t;
43 typedef __kernel_old_gid_t	old_gid_t;
44 #endif /* CONFIG_UID16 */
45 
46 /* libc5 includes this file to define uid_t, thus uid_t can never change
47  * when it is included by non-kernel code
48  */
49 #else
50 typedef __kernel_uid_t		uid_t;
51 typedef __kernel_gid_t		gid_t;
52 #endif /* __KERNEL__ */
53 
54 #if defined(__GNUC__) && !defined(__STRICT_ANSI__)
55 typedef __kernel_loff_t		loff_t;
56 #endif
57 
58 /*
59  * The following typedefs are also protected by individual ifdefs for
60  * historical reasons:
61  */
62 #ifndef _SIZE_T
63 #define _SIZE_T
64 typedef __kernel_size_t		size_t;
65 #endif
66 
67 #ifndef _SSIZE_T
68 #define _SSIZE_T
69 typedef __kernel_ssize_t	ssize_t;
70 #endif
71 
72 #ifndef _PTRDIFF_T
73 #define _PTRDIFF_T
74 typedef __kernel_ptrdiff_t	ptrdiff_t;
75 #endif
76 
77 #ifndef _TIME_T
78 #define _TIME_T
79 typedef __kernel_time_t		time_t;
80 #endif
81 
82 #ifndef _CLOCK_T
83 #define _CLOCK_T
84 typedef __kernel_clock_t	clock_t;
85 #endif
86 
87 #ifndef _CADDR_T
88 #define _CADDR_T
89 typedef __kernel_caddr_t	caddr_t;
90 #endif
91 
92 /* bsd */
93 typedef unsigned char		u_char;
94 typedef unsigned short		u_short;
95 typedef unsigned int		u_int;
96 typedef unsigned long		u_long;
97 
98 /* sysv */
99 typedef unsigned char		unchar;
100 typedef unsigned short		ushort;
101 typedef unsigned int		uint;
102 typedef unsigned long		ulong;
103 
104 #ifndef __BIT_TYPES_DEFINED__
105 #define __BIT_TYPES_DEFINED__
106 
107 typedef		__u8		u_int8_t;
108 typedef		__s8		int8_t;
109 typedef		__u16		u_int16_t;
110 typedef		__s16		int16_t;
111 typedef		__u32		u_int32_t;
112 typedef		__s32		int32_t;
113 
114 #endif /* !(__BIT_TYPES_DEFINED__) */
115 
116 typedef		__u8		uint8_t;
117 typedef		__u16		uint16_t;
118 typedef		__u32		uint32_t;
119 
120 #if defined(__GNUC__) && !defined(__STRICT_ANSI__)
121 typedef		__u64		uint64_t;
122 typedef		__u64		u_int64_t;
123 typedef		__s64		int64_t;
124 #endif
125 
126 /* this is a special 64bit data type that is 8-byte aligned */
127 #define aligned_u64 unsigned long long __attribute__((aligned(8)))
128 
129 /*
130  * The type used for indexing onto a disc or disc partition.
131  * If required, asm/types.h can override it and define
132  * HAVE_SECTOR_T
133  */
134 #ifndef HAVE_SECTOR_T
135 typedef unsigned long sector_t;
136 #endif
137 
138 /*
139  * The type of an index into the pagecache.  Use a #define so asm/types.h
140  * can override it.
141  */
142 #ifndef pgoff_t
143 #define pgoff_t unsigned long
144 #endif
145 
146 #endif /* __KERNEL_STRICT_NAMES */
147 
148 /*
149  * Below are truly Linux-specific types that should never collide with
150  * any application/library that wants linux/types.h.
151  */
152 
153 #ifdef __CHECKER__
154 #define __bitwise__ __attribute__((bitwise))
155 #else
156 #define __bitwise__
157 #endif
158 #ifdef __CHECK_ENDIAN__
159 #define __bitwise __bitwise__
160 #else
161 #define __bitwise
162 #endif
163 
164 typedef __u16 __bitwise __le16;
165 typedef __u16 __bitwise __be16;
166 typedef __u32 __bitwise __le32;
167 typedef __u32 __bitwise __be32;
168 #if defined(__GNUC__) && !defined(__STRICT_ANSI__)
169 typedef __u64 __bitwise __le64;
170 typedef __u64 __bitwise __be64;
171 #endif
172 
173 #ifdef __KERNEL__
174 typedef unsigned __bitwise__ gfp_t;
175 #endif
176 
177 struct ustat {
178 	__kernel_daddr_t	f_tfree;
179 	__kernel_ino_t		f_tinode;
180 	char			f_fname[6];
181 	char			f_fpack[6];
182 };
183 
184 #endif /* _LINUX_TYPES_H */
185