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