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 #include <sys/varargs.h>
  10
  11 #ifndef _KERNEL
  12 #define _KERNEL                         __KERNEL__
  13 #endif
  14
  15 /* Missing defines.
  16  */
  17 #define FALSE                           0
  18 #define TRUE                            1
  19
  20 #define INT32_MAX                       INT_MAX
  21 #define INT32_MIN                       INT_MIN
  22 #define UINT32_MAX                      UINT_MAX
  23 #define UINT32_MIN                      UINT_MIN
  24 #define INT64_MAX                       LLONG_MAX
  25 #define INT64_MIN                       LLONG_MIN
  26 #define UINT64_MAX                      ULLONG_MAX
  27 #define UINT64_MIN                      ULLONG_MIN
  28
  29 #define NBBY                            8
  30 #define ENOTSUP                         ENOTSUPP
  31
  32 #define MAXMSGLEN                       256
  33 #define MAXNAMELEN                      256
  34 #define MAXPATHLEN                      PATH_MAX
  35 #define MAXOFFSET_T                     0x7fffffffffffffffl
  36
  37 #define MAXBSIZE                        8192
  38 #define DEV_BSIZE                       512
  39 #define DEV_BSHIFT                      9 /* log2(DEV_BSIZE) */
  40
  41 #define max_ncpus                       64
  42 #define CPU_SEQID                       smp_processor_id() /* I think... */
  43 #define _NOTE(x)
  44
  45 /* 0..MAX_PRIO-1:               Process priority
  46  * 0..MAX_RT_PRIO-1:            RT priority tasks
  47  * MAX_RT_PRIO..MAX_PRIO-1:     SCHED_NORMAL tasks
  48  *
  49  * Treat shim tasks as SCHED_NORMAL tasks
  50  */
  51 #define minclsyspri                     (MAX_RT_PRIO)
  52 #define maxclsyspri                     (MAX_PRIO-1)
  53
  54 #define NICE_TO_PRIO(nice)              (MAX_RT_PRIO + (nice) + 20)
  55 #define PRIO_TO_NICE(prio)              ((prio) - MAX_RT_PRIO - 20)
  56
  57 #define kred                            NULL
  58
  59 #define FREAD                           1
  60 #define FWRITE                          2
  61 #define FCREAT  O_CREAT
  62 #define FTRUNC  O_TRUNC
  63 #define FOFFMAX O_LARGEFILE
  64 #define FSYNC   O_SYNC
  65 #define FDSYNC  O_DSYNC
  66 #define FRSYNC  O_RSYNC
  67 #define FEXCL   O_EXCL
  68
  69 #define FNODSYNC  0x10000 /* fsync pseudo flag */
  70 #define FNOFOLLOW 0x20000 /* don't follow symlinks */
  71
  72 /* Missing macros
  73  */
  74 #define PAGESIZE                        PAGE_SIZE
  75
  76 /* from Solaris sys/byteorder.h */
  77 #define BSWAP_8(x)      ((x) & 0xff)
  78 #define BSWAP_16(x)     ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
  79 #define BSWAP_32(x)     ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
  80 #define BSWAP_64(x)     ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))
  81
  82 /* Map some simple functions.
  83  */
  84 #define bzero(ptr,size)                 memset(ptr,0,size)
  85 #define bcopy(src,dest,size)            memcpy(dest,src,size)
  86 #define bcmp(src,dest,size)             memcmp((src), (dest), (size_t)(size))
  87 #define ASSERT(x)                       BUG_ON(!(x))
  88 #define VERIFY(x)                       ASSERT(x)
  89
  90 #define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \
  91         const TYPE __left = (TYPE)(LEFT);        \
  92         const TYPE __right = (TYPE)(RIGHT);      \
  93         if (!(__left OP __right))                \
  94                 BUG();                           \
  95 } while (0)
  96
  97 #define VERIFY3S(x, y, z)       VERIFY3_IMPL(x, y, z, int64_t)
  98 #define VERIFY3U(x, y, z)       VERIFY3_IMPL(x, y, z, uint64_t)
  99 #define VERIFY3P(x, y, z)       VERIFY3_IMPL(x, y, z, uintptr_t)
 100
 101 #define ASSERT3S(x, y, z)       VERIFY3S(x, y, z)
 102 #define ASSERT3U(x, y, z)       VERIFY3U(x, y, z)
 103 #define ASSERT3P(x, y, z)       VERIFY3P(x, y, z)
 104
 105 /* Dtrace probes do not exist in the linux kernel */
 106
 107 #ifdef DTRACE_PROBE1
 108 #undef  DTRACE_PROBE1
 109 #endif  /* DTRACE_PROBE1 */
 110 #define DTRACE_PROBE1(a, b, c)                          ((void)0)
 111
 112 #ifdef DTRACE_PROBE2
 113 #undef  DTRACE_PROBE2
 114 #endif  /* DTRACE_PROBE2 */
 115 #define DTRACE_PROBE2(a, b, c, d, e)                    ((void)0)
 116
 117 #ifdef DTRACE_PROBE3
 118 #undef  DTRACE_PROBE3
 119 #endif  /* DTRACE_PROBE3 */
 120 #define DTRACE_PROBE3(a, b, c, d, e, f, g)              ((void)0)
 121
 122 #ifdef DTRACE_PROBE4
 123 #undef  DTRACE_PROBE4
 124 #endif  /* DTRACE_PROBE4 */
 125 #define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)        ((void)0)
 126
 127 /* Missing globals */
 128 extern int p0;
 129
 130 /* Missing misc functions */
 131 extern int highbit(unsigned long i);
 132
 133 #define makedevice(maj,min) makedev(maj,min)
 134 #define zone_dataset_visible(x, y)                      (1)
 135 #define INGLOBALZONE(z)                                 (1)
 136 #define utsname                                         system_utsname
 137
 138 /* XXX - Borrowed from zfs project libsolcompat/include/sys/sysmacros.h */
 139 /* common macros */
 140 #ifndef MIN
 141 #define MIN(a, b)       ((a) < (b) ? (a) : (b))
 142 #endif
 143 #ifndef MAX
 144 #define MAX(a, b)       ((a) < (b) ? (b) : (a))
 145 #endif
 146 #ifndef ABS
 147 #define ABS(a)          ((a) < 0 ? -(a) : (a))
 148 #endif
 149
 150 /*
 151  * Compatibility macros/typedefs needed for Solaris -> Linux port
 152  */
 153 #define P2ALIGN(x, align)    ((x) & -(align))
 154 #define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1)
 155 #define P2ROUNDUP(x, align)  (-(-(x) & -(align)))
 156 #define P2ROUNDUP_TYPED(x, align, type) \
 157                              (-(-(type)(x) & -(type)(align)))
 158 #define P2PHASE(x, align)    ((x) & ((align) - 1))
 159 #define P2NPHASE(x, align)   (-(x) & ((align) - 1))
 160 #define P2NPHASE_TYPED(x, align, type) \
 161                              (-(type)(x) & ((type)(align) - 1))
 162 #define ISP2(x)              (((x) & ((x) - 1)) == 0)
 163 #define IS_P2ALIGNED(v, a)   ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
 164
 165 /*
 166  * Typed version of the P2* macros.  These macros should be used to ensure
 167  * that the result is correctly calculated based on the data type of (x),
 168  * which is passed in as the last argument, regardless of the data
 169  * type of the alignment.  For example, if (x) is of type uint64_t,
 170  * and we want to round it up to a page boundary using "PAGESIZE" as
 171  * the alignment, we can do either
 172  * P2ROUNDUP(x, (uint64_t)PAGESIZE)
 173  * or
 174  * P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t)
 175  */
 176 #define P2ALIGN_TYPED(x, align, type)   \
 177         ((type)(x) & -(type)(align))
 178 #define P2PHASE_TYPED(x, align, type)   \
 179         ((type)(x) & ((type)(align) - 1))
 180 #define P2NPHASE_TYPED(x, align, type)  \
 181         (-(type)(x) & ((type)(align) - 1))
 182 #define P2ROUNDUP_TYPED(x, align, type) \
 183         (-(-(type)(x) & -(type)(align)))
 184 #define P2END_TYPED(x, align, type)     \
 185         (-(~(type)(x) & -(type)(align)))
 186 #define P2PHASEUP_TYPED(x, align, phase, type)  \
 187         ((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align)))
 188 #define P2CROSS_TYPED(x, y, align, type)        \
 189         (((type)(x) ^ (type)(y)) > (type)(align) - 1)
 190 #define P2SAMEHIGHBIT_TYPED(x, y, type) \
 191         (((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y)))
 192
 193 #if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof)
 194
 195 /* avoid any possibility of clashing with <stddef.h> version */
 196
 197 #define offsetof(s, m)  ((size_t)(&(((s *)0)->m)))
 198 #endif
 199
 200 #ifdef  __cplusplus
 201 }
 202 #endif
 203
 204 #endif  /* _SPL_SYSMACROS_H */