include/linux/types.h

   1 #ifndef _LINUX_TYPES_H
   2 #define _LINUX_TYPES_H
   3
   4 #include <asm/types.h>
   5
   6 #ifndef __ASSEMBLY__
   7 #ifdef  __KERNEL__
   8
   9 #define DECLARE_BITMAP(name,bits) \
  10         unsigned long name[BITS_TO_LONGS(bits)]
  11 #else
  12 #ifndef __EXPORTED_HEADERS__
  13 #warning "Attempt to use kernel headers from user space, see http://kernelnewbies.org/KernelHeaders"
  14 #endif /* __EXPORTED_HEADERS__ */
  15 #endif
  16
  17 #include <linux/posix_types.h>
  18
  19 #ifdef __KERNEL__
  20
  21 typedef __u32 __kernel_dev_t;
  22
  23 typedef __kernel_fd_set         fd_set;
  24 typedef __kernel_dev_t          dev_t;
  25 typedef __kernel_ino_t          ino_t;
  26 typedef __kernel_mode_t         mode_t;
  27 typedef __kernel_nlink_t        nlink_t;
  28 typedef __kernel_off_t          off_t;
  29 typedef __kernel_pid_t          pid_t;
  30 typedef __kernel_daddr_t        daddr_t;
  31 typedef __kernel_key_t          key_t;
  32 typedef __kernel_suseconds_t    suseconds_t;
  33 typedef __kernel_timer_t        timer_t;
  34 typedef __kernel_clockid_t      clockid_t;
  35 typedef __kernel_mqd_t          mqd_t;
  36
  37 typedef _Bool                   bool;
  38
  39 typedef __kernel_uid32_t        uid_t;
  40 typedef __kernel_gid32_t        gid_t;
  41 typedef __kernel_uid16_t        uid16_t;
  42 typedef __kernel_gid16_t        gid16_t;
  43
  44 typedef unsigned long           uintptr_t;
  45
  46 #ifdef CONFIG_UID16
  47 /* This is defined by include/asm-{arch}/posix_types.h */
  48 typedef __kernel_old_uid_t      old_uid_t;
  49 typedef __kernel_old_gid_t      old_gid_t;
  50 #endif /* CONFIG_UID16 */
  51
  52 #if defined(__GNUC__)
  53 typedef __kernel_loff_t         loff_t;
  54 #endif
  55
  56 /*
  57  * The following typedefs are also protected by individual ifdefs for
  58  * historical reasons:
  59  */
  60 #ifndef _SIZE_T
  61 #define _SIZE_T
  62 typedef __kernel_size_t         size_t;
  63 #endif
  64
  65 #ifndef _SSIZE_T
  66 #define _SSIZE_T
  67 typedef __kernel_ssize_t        ssize_t;
  68 #endif
  69
  70 #ifndef _PTRDIFF_T
  71 #define _PTRDIFF_T
  72 typedef __kernel_ptrdiff_t      ptrdiff_t;
  73 #endif
  74
  75 #ifndef _TIME_T
  76 #define _TIME_T
  77 typedef __kernel_time_t         time_t;
  78 #endif
  79
  80 #ifndef _CLOCK_T
  81 #define _CLOCK_T
  82 typedef __kernel_clock_t        clock_t;
  83 #endif
  84
  85 #ifndef _CADDR_T
  86 #define _CADDR_T
  87 typedef __kernel_caddr_t        caddr_t;
  88 #endif
  89
  90 /* bsd */
  91 typedef unsigned char           u_char;
  92 typedef unsigned short          u_short;
  93 typedef unsigned int            u_int;
  94 typedef unsigned long           u_long;
  95
  96 /* sysv */
  97 typedef unsigned char           unchar;
  98 typedef unsigned short          ushort;
  99 typedef unsigned int            uint;
 100 typedef unsigned long           ulong;
 101
 102 #ifndef __BIT_TYPES_DEFINED__
 103 #define __BIT_TYPES_DEFINED__
 104
 105 typedef         __u8            u_int8_t;
 106 typedef         __s8            int8_t;
 107 typedef         __u16           u_int16_t;
 108 typedef         __s16           int16_t;
 109 typedef         __u32           u_int32_t;
 110 typedef         __s32           int32_t;
 111
 112 #endif /* !(__BIT_TYPES_DEFINED__) */
 113
 114 typedef         __u8            uint8_t;
 115 typedef         __u16           uint16_t;
 116 typedef         __u32           uint32_t;
 117
 118 #if defined(__GNUC__)
 119 typedef         __u64           uint64_t;
 120 typedef         __u64           u_int64_t;
 121 typedef         __s64           int64_t;
 122 #endif
 123
 124 /* this is a special 64bit data type that is 8-byte aligned */
 125 #define aligned_u64 __u64 __attribute__((aligned(8)))
 126 #define aligned_be64 __be64 __attribute__((aligned(8)))
 127 #define aligned_le64 __le64 __attribute__((aligned(8)))
 128
 129 /**
 130  * The type used for indexing onto a disc or disc partition.
 131  *
 132  * Linux always considers sectors to be 512 bytes long independently
 133  * of the devices real block size.
 134  *
 135  * blkcnt_t is the type of the inode's block count.
 136  */
 137 #ifdef CONFIG_LBDAF
 138 typedef u64 sector_t;
 139 typedef u64 blkcnt_t;
 140 #else
 141 typedef unsigned long sector_t;
 142 typedef unsigned long blkcnt_t;
 143 #endif
 144
 145 /*
 146  * The type of an index into the pagecache.  Use a #define so asm/types.h
 147  * can override it.
 148  */
 149 #ifndef pgoff_t
 150 #define pgoff_t unsigned long
 151 #endif
 152
 153 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
 154 typedef u64 dma_addr_t;
 155 #else
 156 typedef u32 dma_addr_t;
 157 #endif /* dma_addr_t */
 158
 159 #endif /* __KERNEL__ */
 160
 161 /*
 162  * Below are truly Linux-specific types that should never collide with
 163  * any application/library that wants linux/types.h.
 164  */
 165
 166 #ifdef __CHECKER__
 167 #define __bitwise__ __attribute__((bitwise))
 168 #else
 169 #define __bitwise__
 170 #endif
 171 #ifdef __CHECK_ENDIAN__
 172 #define __bitwise __bitwise__
 173 #else
 174 #define __bitwise
 175 #endif
 176
 177 typedef __u16 __bitwise __le16;
 178 typedef __u16 __bitwise __be16;
 179 typedef __u32 __bitwise __le32;
 180 typedef __u32 __bitwise __be32;
 181 typedef __u64 __bitwise __le64;
 182 typedef __u64 __bitwise __be64;
 183
 184 typedef __u16 __bitwise __sum16;
 185 typedef __u32 __bitwise __wsum;
 186
 187 /*
 188  * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid
 189  * common 32/64-bit compat problems.
 190  * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other
 191  * architectures) and to 8-byte boundaries on 64-bit architetures.  The new
 192  * aligned_64 type enforces 8-byte alignment so that structs containing
 193  * aligned_64 values have the same alignment on 32-bit and 64-bit architectures.
 194  * No conversions are necessary between 32-bit user-space and a 64-bit kernel.
 195  */
 196 #define __aligned_u64 __u64 __attribute__((aligned(8)))
 197 #define __aligned_be64 __be64 __attribute__((aligned(8)))
 198 #define __aligned_le64 __le64 __attribute__((aligned(8)))
 199
 200 #ifdef __KERNEL__
 201 typedef unsigned __bitwise__ gfp_t;
 202 typedef unsigned __bitwise__ fmode_t;
 203
 204 #ifdef CONFIG_PHYS_ADDR_T_64BIT
 205 typedef u64 phys_addr_t;
 206 #else
 207 typedef u32 phys_addr_t;
 208 #endif
 209
 210 typedef phys_addr_t resource_size_t;
 211
 212 typedef struct {
 213         int counter;
 214 } atomic_t;
 215
 216 #ifdef CONFIG_64BIT
 217 typedef struct {
 218         long counter;
 219 } atomic64_t;
 220 #endif
 221
 222 struct list_head {
 223         struct list_head *next, *prev;
 224 };
 225
 226 struct hlist_head {
 227         struct hlist_node *first;
 228 };
 229
 230 struct hlist_node {
 231         struct hlist_node *next, **pprev;
 232 };
 233
 234 struct ustat {
 235         __kernel_daddr_t        f_tfree;
 236         __kernel_ino_t          f_tinode;
 237         char                    f_fname[6];
 238         char                    f_fpack[6];
 239 };
 240
 241 /**
 242  * struct rcu_head - callback structure for use with RCU
 243  * @next: next update requests in a list
 244  * @func: actual update function to call after the grace period.
 245  */
 246 struct rcu_head {
 247         struct rcu_head *next;
 248         void (*func)(struct rcu_head *head);
 249 };
 250
 251 #endif  /* __KERNEL__ */
 252 #endif /*  __ASSEMBLY__ */
 253 #endif /* _LINUX_TYPES_H */