include/sys/sysmacros.h

   1 #ifndef _SPL_SYSMACROS_H
   2 #define _SPL_SYSMACROS_H
   3
   4 #ifdef  __cplusplus
   5 extern "C" {
   6 #endif
   7
   8 #include <linux/module.h>
   9
  10 #ifndef _KERNEL
  11 #define _KERNEL                         __KERNEL__
  12 #endif
  13
  14 /* Missing defines.
  15  */
  16 #define FALSE                           0
  17 #define TRUE                            1
  18
  19 #define INT32_MAX                       INT_MAX
  20 #define INT32_MIN                       INT_MIN
  21 #define UINT32_MAX                      UINT_MAX
  22 #define UINT32_MIN                      UINT_MIN
  23 #define INT64_MAX                       LLONG_MAX
  24 #define INT64_MIN                       LLONG_MIN
  25 #define UINT64_MAX                      ULLONG_MAX
  26 #define UINT64_MIN                      ULLONG_MIN
  27
  28 #define NBBY                            8
  29 #define ENOTSUP                         ENOTSUPP
  30
  31 #define MAXNAMELEN                      256
  32 #define MAXPATHLEN                      PATH_MAX
  33 #define MAXOFFSET_T                     0x7fffffffffffffffl
  34
  35 #define MAXBSIZE                        8192
  36 #define DEV_BSIZE                       512
  37 #define DEV_BSHIFT                      9 /* log2(DEV_BSIZE) */
  38
  39 #define __va_list                       va_list
  40 #define max_ncpus                       64
  41 #define _NOTE(x)
  42
  43 /* 0..MAX_PRIO-1:               Process priority
  44  * 0..MAX_RT_PRIO-1:            RT priority tasks
  45  * MAX_RT_PRIO..MAX_PRIO-1:     SCHED_NORMAL tasks
  46  *
  47  * Treat shim tasks as SCHED_NORMAL tasks
  48  */
  49 #define minclsyspri                     (MAX_RT_PRIO)
  50 #define maxclsyspri                     (MAX_PRIO-1)
  51
  52 #define NICE_TO_PRIO(nice)              (MAX_RT_PRIO + (nice) + 20)
  53 #define PRIO_TO_NICE(prio)              ((prio) - MAX_RT_PRIO - 20)
  54
  55 #define kred                            NULL
  56
  57 #define FREAD                           1
  58 #define FWRITE                          2
  59 #define FCREAT  O_CREAT
  60 #define FTRUNC  O_TRUNC
  61 #define FOFFMAX O_LARGEFILE
  62 #define FSYNC   O_SYNC
  63 #define FDSYNC  O_DSYNC
  64 #define FRSYNC  O_RSYNC
  65 #define FEXCL   O_EXCL
  66
  67 #define FNODSYNC  0x10000 /* fsync pseudo flag */
  68 #define FNOFOLLOW 0x20000 /* don't follow symlinks */
  69
  70 /* Missing macros
  71  */
  72 #define PAGESIZE                        PAGE_SIZE
  73
  74 /* from Solaris sys/byteorder.h */
  75 #define BSWAP_8(x)      ((x) & 0xff)
  76 #define BSWAP_16(x)     ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
  77 #define BSWAP_32(x)     ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
  78 #define BSWAP_64(x)     ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))
  79
  80 /* Map some simple functions.
  81  */
  82 #define bzero(ptr,size)                 memset(ptr,0,size)
  83 #define bcopy(src,dest,size)            memcpy(dest,src,size)
  84 #define bcmp(src,dest,size)             memcmp((src), (dest), (size_t)(size))
  85 #define ASSERT(x)                       BUG_ON(!(x))
  86 #define VERIFY(x)                       ASSERT(x)
  87
  88 #define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \
  89         const TYPE __left = (TYPE)(LEFT);        \
  90         const TYPE __right = (TYPE)(RIGHT);      \
  91         if (!(__left OP __right))                \
  92                 BUG();                           \
  93 } while (0)
  94
  95 #define VERIFY3S(x, y, z)       VERIFY3_IMPL(x, y, z, int64_t)
  96 #define VERIFY3U(x, y, z)       VERIFY3_IMPL(x, y, z, uint64_t)
  97 #define VERIFY3P(x, y, z)       VERIFY3_IMPL(x, y, z, uintptr_t)
  98
  99 #define ASSERT3S(x, y, z)       VERIFY3S(x, y, z)
 100 #define ASSERT3U(x, y, z)       VERIFY3U(x, y, z)
 101 #define ASSERT3P(x, y, z)       VERIFY3P(x, y, z)
 102
 103 /* Dtrace probes do not exist in the linux kernel */
 104
 105 #ifdef DTRACE_PROBE1
 106 #undef  DTRACE_PROBE1
 107 #endif  /* DTRACE_PROBE1 */
 108 #define DTRACE_PROBE1(a, b, c)                          ((void)0)
 109
 110 #ifdef DTRACE_PROBE2
 111 #undef  DTRACE_PROBE2
 112 #endif  /* DTRACE_PROBE2 */
 113 #define DTRACE_PROBE2(a, b, c, d, e)                    ((void)0)
 114
 115 #ifdef DTRACE_PROBE3
 116 #undef  DTRACE_PROBE3
 117 #endif  /* DTRACE_PROBE3 */
 118 #define DTRACE_PROBE3(a, b, c, d, e, f, g)              ((void)0)
 119
 120 #ifdef DTRACE_PROBE4
 121 #undef  DTRACE_PROBE4
 122 #endif  /* DTRACE_PROBE4 */
 123 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)        ((void)0)
 124
 125 /* Missing globals */
 126 extern int p0;
 127
 128 /* Missing misc functions */
 129 extern int highbit(unsigned long i);
 130
 131 #define makedevice(maj,min) makedev(maj,min)
 132 #define zone_dataset_visible(x, y)                      (1)
 133 #define INGLOBALZONE(z)                                 (1)
 134 #define utsname                                         system_utsname
 135
 136 /* XXX - Borrowed from zfs project libsolcompat/include/sys/sysmacros.h */
 137 /* common macros */
 138 #ifndef MIN
 139 #define MIN(a, b)       ((a) < (b) ? (a) : (b))
 140 #endif
 141 #ifndef MAX
 142 #define MAX(a, b)       ((a) < (b) ? (b) : (a))
 143 #endif
 144 #ifndef ABS
 145 #define ABS(a)          ((a) < 0 ? -(a) : (a))
 146 #endif
 147
 148 /*
 149  * Compatibility macros/typedefs needed for Solaris -> Linux port
 150  */
 151 #define P2ALIGN(x, align)    ((x) & -(align))
 152 #define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1)
 153 #define P2ROUNDUP(x, align)  (-(-(x) & -(align)))
 154 #define P2ROUNDUP_TYPED(x, align, type) \
 155                              (-(-(type)(x) & -(type)(align)))
 156 #define P2PHASE(x, align)    ((x) & ((align) - 1))
 157 #define P2NPHASE(x, align)   (-(x) & ((align) - 1))
 158 #define P2NPHASE_TYPED(x, align, type) \
 159                              (-(type)(x) & ((type)(align) - 1))
 160 #define ISP2(x)              (((x) & ((x) - 1)) == 0)
 161 #define IS_P2ALIGNED(v, a)   ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
 162
 163 /*
 164  * Typed version of the P2* macros.  These macros should be used to ensure
 165  * that the result is correctly calculated based on the data type of (x),
 166  * which is passed in as the last argument, regardless of the data
 167  * type of the alignment.  For example, if (x) is of type uint64_t,
 168  * and we want to round it up to a page boundary using "PAGESIZE" as
 169  * the alignment, we can do either
 170  * P2ROUNDUP(x, (uint64_t)PAGESIZE)
 171  * or
 172  * P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t)
 173  */
 174 #define P2ALIGN_TYPED(x, align, type)   \
 175         ((type)(x) & -(type)(align))
 176 #define P2PHASE_TYPED(x, align, type)   \
 177         ((type)(x) & ((type)(align) - 1))
 178 #define P2NPHASE_TYPED(x, align, type)  \
 179         (-(type)(x) & ((type)(align) - 1))
 180 #define P2ROUNDUP_TYPED(x, align, type) \
 181         (-(-(type)(x) & -(type)(align)))
 182 #define P2END_TYPED(x, align, type)     \
 183         (-(~(type)(x) & -(type)(align)))
 184 #define P2PHASEUP_TYPED(x, align, phase, type)  \
 185         ((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align)))
 186 #define P2CROSS_TYPED(x, y, align, type)        \
 187         (((type)(x) ^ (type)(y)) > (type)(align) - 1)
 188 #define P2SAMEHIGHBIT_TYPED(x, y, type) \
 189         (((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y)))
 190
 191 #if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof)
 192
 193 /* avoid any possibility of clashing with <stddef.h> version */
 194
 195 #define offsetof(s, m)  ((size_t)(&(((s *)0)->m)))
 196 #endif
 197
 198 #ifdef  __cplusplus
 199 }
 200 #endif
 201
 202 #endif  /* _SPL_SYSMACROS_H */