linux/include/linux/types.h
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   1#ifndef _LINUX_TYPES_H
   2#define _LINUX_TYPES_H
   3
   4#define __EXPORTED_HEADERS__
   5#include <uapi/linux/types.h>
   6
   7#ifndef __ASSEMBLY__
   8
   9#define DECLARE_BITMAP(name,bits) \
  10        unsigned long name[BITS_TO_LONGS(bits)]
  11
  12typedef __u32 __kernel_dev_t;
  13
  14typedef __kernel_fd_set         fd_set;
  15typedef __kernel_dev_t          dev_t;
  16typedef __kernel_ino_t          ino_t;
  17typedef __kernel_mode_t         mode_t;
  18typedef unsigned short          umode_t;
  19typedef __u32                   nlink_t;
  20typedef __kernel_off_t          off_t;
  21typedef __kernel_pid_t          pid_t;
  22typedef __kernel_daddr_t        daddr_t;
  23typedef __kernel_key_t          key_t;
  24typedef __kernel_suseconds_t    suseconds_t;
  25typedef __kernel_timer_t        timer_t;
  26typedef __kernel_clockid_t      clockid_t;
  27typedef __kernel_mqd_t          mqd_t;
  28
  29typedef _Bool                   bool;
  30
  31typedef __kernel_uid32_t        uid_t;
  32typedef __kernel_gid32_t        gid_t;
  33typedef __kernel_uid16_t        uid16_t;
  34typedef __kernel_gid16_t        gid16_t;
  35
  36typedef unsigned long           uintptr_t;
  37
  38#ifdef CONFIG_UID16
  39/* This is defined by include/asm-{arch}/posix_types.h */
  40typedef __kernel_old_uid_t      old_uid_t;
  41typedef __kernel_old_gid_t      old_gid_t;
  42#endif /* CONFIG_UID16 */
  43
  44#if defined(__GNUC__)
  45typedef __kernel_loff_t         loff_t;
  46#endif
  47
  48/*
  49 * The following typedefs are also protected by individual ifdefs for
  50 * historical reasons:
  51 */
  52#ifndef _SIZE_T
  53#define _SIZE_T
  54typedef __kernel_size_t         size_t;
  55#endif
  56
  57#ifndef _SSIZE_T
  58#define _SSIZE_T
  59typedef __kernel_ssize_t        ssize_t;
  60#endif
  61
  62#ifndef _PTRDIFF_T
  63#define _PTRDIFF_T
  64typedef __kernel_ptrdiff_t      ptrdiff_t;
  65#endif
  66
  67#ifndef _TIME_T
  68#define _TIME_T
  69typedef __kernel_time_t         time_t;
  70#endif
  71
  72#ifndef _CLOCK_T
  73#define _CLOCK_T
  74typedef __kernel_clock_t        clock_t;
  75#endif
  76
  77#ifndef _CADDR_T
  78#define _CADDR_T
  79typedef __kernel_caddr_t        caddr_t;
  80#endif
  81
  82/* bsd */
  83typedef unsigned char           u_char;
  84typedef unsigned short          u_short;
  85typedef unsigned int            u_int;
  86typedef unsigned long           u_long;
  87
  88/* sysv */
  89typedef unsigned char           unchar;
  90typedef unsigned short          ushort;
  91typedef unsigned int            uint;
  92typedef unsigned long           ulong;
  93
  94#ifndef __BIT_TYPES_DEFINED__
  95#define __BIT_TYPES_DEFINED__
  96
  97typedef         __u8            u_int8_t;
  98typedef         __s8            int8_t;
  99typedef         __u16           u_int16_t;
 100typedef         __s16           int16_t;
 101typedef         __u32           u_int32_t;
 102typedef         __s32           int32_t;
 103
 104#endif /* !(__BIT_TYPES_DEFINED__) */
 105
 106typedef         __u8            uint8_t;
 107typedef         __u16           uint16_t;
 108typedef         __u32           uint32_t;
 109
 110#if defined(__GNUC__)
 111typedef         __u64           uint64_t;
 112typedef         __u64           u_int64_t;
 113typedef         __s64           int64_t;
 114#endif
 115
 116/* this is a special 64bit data type that is 8-byte aligned */
 117#define aligned_u64 __u64 __attribute__((aligned(8)))
 118#define aligned_be64 __be64 __attribute__((aligned(8)))
 119#define aligned_le64 __le64 __attribute__((aligned(8)))
 120
 121/**
 122 * The type used for indexing onto a disc or disc partition.
 123 *
 124 * Linux always considers sectors to be 512 bytes long independently
 125 * of the devices real block size.
 126 *
 127 * blkcnt_t is the type of the inode's block count.
 128 */
 129#ifdef CONFIG_LBDAF
 130typedef u64 sector_t;
 131typedef u64 blkcnt_t;
 132#else
 133typedef unsigned long sector_t;
 134typedef unsigned long blkcnt_t;
 135#endif
 136
 137/*
 138 * The type of an index into the pagecache.  Use a #define so asm/types.h
 139 * can override it.
 140 */
 141#ifndef pgoff_t
 142#define pgoff_t unsigned long
 143#endif
 144
 145/* A dma_addr_t can hold any valid DMA or bus address for the platform */
 146#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
 147typedef u64 dma_addr_t;
 148#else
 149typedef u32 dma_addr_t;
 150#endif /* dma_addr_t */
 151
 152#ifdef __CHECKER__
 153#else
 154#endif
 155#ifdef __CHECK_ENDIAN__
 156#else
 157#endif
 158typedef unsigned __bitwise__ gfp_t;
 159typedef unsigned __bitwise__ fmode_t;
 160typedef unsigned __bitwise__ oom_flags_t;
 161
 162#ifdef CONFIG_PHYS_ADDR_T_64BIT
 163typedef u64 phys_addr_t;
 164#else
 165typedef u32 phys_addr_t;
 166#endif
 167
 168typedef phys_addr_t resource_size_t;
 169
 170/*
 171 * This type is the placeholder for a hardware interrupt number. It has to be
 172 * big enough to enclose whatever representation is used by a given platform.
 173 */
 174typedef unsigned long irq_hw_number_t;
 175
 176typedef struct {
 177        int counter;
 178} atomic_t;
 179
 180#ifdef CONFIG_64BIT
 181typedef struct {
 182        long counter;
 183} atomic64_t;
 184#endif
 185
 186struct list_head {
 187        struct list_head *next, *prev;
 188};
 189
 190struct hlist_head {
 191        struct hlist_node *first;
 192};
 193
 194struct hlist_node {
 195        struct hlist_node *next, **pprev;
 196};
 197
 198struct ustat {
 199        __kernel_daddr_t        f_tfree;
 200        __kernel_ino_t          f_tinode;
 201        char                    f_fname[6];
 202        char                    f_fpack[6];
 203};
 204
 205/**
 206 * struct callback_head - callback structure for use with RCU and task_work
 207 * @next: next update requests in a list
 208 * @func: actual update function to call after the grace period.
 209 */
 210struct callback_head {
 211        struct callback_head *next;
 212        void (*func)(struct callback_head *head);
 213};
 214#define rcu_head callback_head
 215
 216#endif /*  __ASSEMBLY__ */
 217#endif /* _LINUX_TYPES_H */
 218
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