142 lines
4.4 KiB
C
142 lines
4.4 KiB
C
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#ifndef _SPL_SYSMACROS_H
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#define _SPL_SYSMACROS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <linux/module.h>
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#ifndef _KERNEL
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#define _KERNEL __KERNEL__
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#endif
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/* Missing defines.
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*/
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#define INT32_MAX INT_MAX
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#define UINT64_MAX (~0ULL)
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#define NBBY 8
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#define ENOTSUP ENOTSUPP
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#define MAXNAMELEN 256
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#define MAXPATHLEN PATH_MAX
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#define __va_list va_list
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#define max_ncpus 64
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/* 0..MAX_PRIO-1: Process priority
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* 0..MAX_RT_PRIO-1: RT priority tasks
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* MAX_RT_PRIO..MAX_PRIO-1: SCHED_NORMAL tasks
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*
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* Treat shim tasks as SCHED_NORMAL tasks
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*/
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#define minclsyspri (MAX_RT_PRIO)
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#define maxclsyspri (MAX_PRIO-1)
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#define NICE_TO_PRIO(nice) (MAX_RT_PRIO + (nice) + 20)
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#define PRIO_TO_NICE(prio) ((prio) - MAX_RT_PRIO - 20)
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#define kred NULL
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#define FREAD 1
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#define FWRITE 2
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#define FCREAT O_CREAT
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#define FTRUNC O_TRUNC
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#define FOFFMAX O_LARGEFILE
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#define FSYNC O_SYNC
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#define FDSYNC O_DSYNC
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#define FRSYNC O_RSYNC
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#define FEXCL O_EXCL
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#define FNODSYNC 0x10000 /* fsync pseudo flag */
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#define FNOFOLLOW 0x20000 /* don't follow symlinks */
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/* Missing macros
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*/
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#define PAGESIZE PAGE_SIZE
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/* from Solaris sys/byteorder.h */
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#define BSWAP_8(x) ((x) & 0xff)
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#define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
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#define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
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#define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))
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/* Map some simple functions.
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*/
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#define bzero(ptr,size) memset(ptr,0,size)
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#define bcopy(src,dest,size) memcpy(dest,src,size)
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#define ASSERT(x) BUG_ON(!(x))
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#define ASSERT3U(left,OP,right) BUG_ON(!((left) OP (right)))
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/* Missing globals
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*/
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extern int p0;
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#define makedevice(maj,min) makedev(maj,min)
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/* XXX - Borrowed from zfs project libsolcompat/include/sys/sysmacros.h */
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/* common macros */
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#ifndef MIN
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#endif
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#ifndef MAX
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#define MAX(a, b) ((a) < (b) ? (b) : (a))
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#endif
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#ifndef ABS
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#define ABS(a) ((a) < 0 ? -(a) : (a))
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#endif
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/*
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* Compatibility macros/typedefs needed for Solaris -> Linux port
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*/
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#define P2ALIGN(x, align) ((x) & -(align))
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#define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1)
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#define P2ROUNDUP(x, align) (-(-(x) & -(align)))
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#define P2ROUNDUP_TYPED(x, align, type) \
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(-(-(type)(x) & -(type)(align)))
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#define P2PHASE(x, align) ((x) & ((align) - 1))
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#define P2NPHASE(x, align) (-(x) & ((align) - 1))
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#define P2NPHASE_TYPED(x, align, type) \
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(-(type)(x) & ((type)(align) - 1))
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#define ISP2(x) (((x) & ((x) - 1)) == 0)
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#define IS_P2ALIGNED(v, a) ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)
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/*
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* Typed version of the P2* macros. These macros should be used to ensure
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* that the result is correctly calculated based on the data type of (x),
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* which is passed in as the last argument, regardless of the data
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* type of the alignment. For example, if (x) is of type uint64_t,
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* and we want to round it up to a page boundary using "PAGESIZE" as
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* the alignment, we can do either
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* P2ROUNDUP(x, (uint64_t)PAGESIZE)
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* or
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* P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t)
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*/
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#define P2ALIGN_TYPED(x, align, type) \
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((type)(x) & -(type)(align))
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#define P2PHASE_TYPED(x, align, type) \
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((type)(x) & ((type)(align) - 1))
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#define P2NPHASE_TYPED(x, align, type) \
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(-(type)(x) & ((type)(align) - 1))
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#define P2ROUNDUP_TYPED(x, align, type) \
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(-(-(type)(x) & -(type)(align)))
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#define P2END_TYPED(x, align, type) \
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(-(~(type)(x) & -(type)(align)))
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#define P2PHASEUP_TYPED(x, align, phase, type) \
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((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align)))
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#define P2CROSS_TYPED(x, y, align, type) \
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(((type)(x) ^ (type)(y)) > (type)(align) - 1)
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#define P2SAMEHIGHBIT_TYPED(x, y, type) \
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(((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y)))
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#if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof)
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/* avoid any possibility of clashing with <stddef.h> version */
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#define offsetof(s, m) ((size_t)(&(((s *)0)->m)))
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SPL_SYSMACROS_H */
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