[mirror_spl-debian.git] / include / sys / sysmacros.h

#ifndef _SPL_SYSMACROS_H
#define _SPL_SYSMACROS_H

#ifdef  __cplusplus
extern "C" {
#endif

#include <linux/module.h>
#include <sys/varargs.h>

#ifndef _KERNEL
#define _KERNEL                         __KERNEL__
#endif

/* Missing defines.
 */
#define FALSE				0
#define TRUE				1

#define INT32_MAX                       INT_MAX
#define INT32_MIN                       INT_MIN
#define UINT32_MAX			UINT_MAX
#define UINT32_MIN			UINT_MIN
#define INT64_MAX			LLONG_MAX
#define INT64_MIN			LLONG_MIN
#define UINT64_MAX                      ULLONG_MAX
#define UINT64_MIN			ULLONG_MIN

#define NBBY                            8
#define ENOTSUP                         ENOTSUPP

#define MAXMSGLEN			256
#define MAXNAMELEN                      256
#define MAXPATHLEN                      PATH_MAX
#define MAXOFFSET_T			0x7fffffffffffffffl

#define MAXBSIZE			8192
#define DEV_BSIZE			512
#define DEV_BSHIFT			9 /* log2(DEV_BSIZE) */

#define max_ncpus                       64
#define CPU_SEQID			smp_processor_id() /* I think... */
#define _NOTE(x)

/* 0..MAX_PRIO-1:		Process priority
 * 0..MAX_RT_PRIO-1:		RT priority tasks
 * MAX_RT_PRIO..MAX_PRIO-1:	SCHED_NORMAL tasks
 *
 * Treat shim tasks as SCHED_NORMAL tasks
 */
#define minclsyspri                     (MAX_RT_PRIO)
#define maxclsyspri                     (MAX_PRIO-1)

#define NICE_TO_PRIO(nice)		(MAX_RT_PRIO + (nice) + 20)
#define PRIO_TO_NICE(prio)		((prio) - MAX_RT_PRIO - 20)

#define kred                            NULL

#define FREAD                           1
#define FWRITE                          2
#define FCREAT  O_CREAT
#define FTRUNC  O_TRUNC
#define FOFFMAX O_LARGEFILE
#define FSYNC   O_SYNC
#define FDSYNC  O_DSYNC
#define FRSYNC  O_RSYNC
#define FEXCL   O_EXCL

#define FNODSYNC  0x10000 /* fsync pseudo flag */
#define FNOFOLLOW 0x20000 /* don't follow symlinks */

/* Missing macros
 */
#define PAGESIZE                        PAGE_SIZE

/* from Solaris sys/byteorder.h */
#define BSWAP_8(x)      ((x) & 0xff)
#define BSWAP_16(x)     ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
#define BSWAP_32(x)     ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
#define BSWAP_64(x)     ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))

/* Map some simple functions.
 */
#define bzero(ptr,size)                 memset(ptr,0,size)
#define bcopy(src,dest,size)            memcpy(dest,src,size)
#define bcmp(src,dest,size)		memcmp((src), (dest), (size_t)(size))
#define ASSERT(x)                       BUG_ON(!(x))
#define VERIFY(x)			ASSERT(x)

#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE) do { \
	const TYPE __left = (TYPE)(LEFT);        \
	const TYPE __right = (TYPE)(RIGHT);      \
	if (!(__left OP __right))                \
		BUG();                           \
} while (0)

#define VERIFY3S(x, y, z)       VERIFY3_IMPL(x, y, z, int64_t)
#define VERIFY3U(x, y, z)       VERIFY3_IMPL(x, y, z, uint64_t)
#define VERIFY3P(x, y, z)       VERIFY3_IMPL(x, y, z, uintptr_t)

#define ASSERT3S(x, y, z)       VERIFY3S(x, y, z)
#define ASSERT3U(x, y, z)       VERIFY3U(x, y, z)
#define ASSERT3P(x, y, z)       VERIFY3P(x, y, z)

/* Dtrace probes do not exist in the linux kernel */

#ifdef DTRACE_PROBE1
#undef  DTRACE_PROBE1
#endif  /* DTRACE_PROBE1 */
#define DTRACE_PROBE1(a, b, c)				((void)0)

#ifdef DTRACE_PROBE2
#undef  DTRACE_PROBE2
#endif  /* DTRACE_PROBE2 */
#define DTRACE_PROBE2(a, b, c, d, e)			((void)0)

#ifdef DTRACE_PROBE3
#undef  DTRACE_PROBE3
#endif  /* DTRACE_PROBE3 */
#define DTRACE_PROBE3(a, b, c, d, e, f, g)		((void)0)

#ifdef DTRACE_PROBE4
#undef  DTRACE_PROBE4
#endif  /* DTRACE_PROBE4 */
#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i)	((void)0)

/* Missing globals */
extern int p0;

/* Missing misc functions */
extern int highbit(unsigned long i);

#define makedevice(maj,min) makedev(maj,min)
#define zone_dataset_visible(x, y)			(1)
#define INGLOBALZONE(z)					(1)
#define utsname						system_utsname

/* XXX - Borrowed from zfs project libsolcompat/include/sys/sysmacros.h */
/* common macros */
#ifndef MIN
#define MIN(a, b)       ((a) < (b) ? (a) : (b))
#endif
#ifndef MAX
#define MAX(a, b)       ((a) < (b) ? (b) : (a))
#endif
#ifndef ABS
#define ABS(a)          ((a) < 0 ? -(a) : (a))
#endif

/*
 * Compatibility macros/typedefs needed for Solaris -> Linux port
 */
#define P2ALIGN(x, align)    ((x) & -(align))
#define P2CROSS(x, y, align) (((x) ^ (y)) > (align) - 1)
#define P2ROUNDUP(x, align)  (-(-(x) & -(align)))
#define P2ROUNDUP_TYPED(x, align, type) \
                             (-(-(type)(x) & -(type)(align)))
#define P2PHASE(x, align)    ((x) & ((align) - 1))
#define P2NPHASE(x, align)   (-(x) & ((align) - 1))
#define P2NPHASE_TYPED(x, align, type) \
                             (-(type)(x) & ((type)(align) - 1))
#define ISP2(x)              (((x) & ((x) - 1)) == 0)
#define IS_P2ALIGNED(v, a)   ((((uintptr_t)(v)) & ((uintptr_t)(a) - 1)) == 0)

/*
 * Typed version of the P2* macros.  These macros should be used to ensure
 * that the result is correctly calculated based on the data type of (x),
 * which is passed in as the last argument, regardless of the data
 * type of the alignment.  For example, if (x) is of type uint64_t,
 * and we want to round it up to a page boundary using "PAGESIZE" as
 * the alignment, we can do either
 * P2ROUNDUP(x, (uint64_t)PAGESIZE)
 * or
 * P2ROUNDUP_TYPED(x, PAGESIZE, uint64_t)
 */
#define P2ALIGN_TYPED(x, align, type)   \
        ((type)(x) & -(type)(align))
#define P2PHASE_TYPED(x, align, type)   \
        ((type)(x) & ((type)(align) - 1))
#define P2NPHASE_TYPED(x, align, type)  \
        (-(type)(x) & ((type)(align) - 1))
#define P2ROUNDUP_TYPED(x, align, type) \
        (-(-(type)(x) & -(type)(align)))
#define P2END_TYPED(x, align, type)     \
        (-(~(type)(x) & -(type)(align)))
#define P2PHASEUP_TYPED(x, align, phase, type)  \
        ((type)(phase) - (((type)(phase) - (type)(x)) & -(type)(align)))
#define P2CROSS_TYPED(x, y, align, type)        \
        (((type)(x) ^ (type)(y)) > (type)(align) - 1)
#define P2SAMEHIGHBIT_TYPED(x, y, type) \
        (((type)(x) ^ (type)(y)) < ((type)(x) & (type)(y)))

#if defined(_KERNEL) && !defined(_KMEMUSER) && !defined(offsetof)

/* avoid any possibility of clashing with <stddef.h> version */

#define offsetof(s, m)  ((size_t)(&(((s *)0)->m)))
#endif

#ifdef  __cplusplus
}
#endif

#endif  /* _SPL_SYSMACROS_H */
Commit	Line	Data
14c5326c	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>
05ae387b	9	#include <sys/varargs.h>
14c5326c	10
	11	#ifndef _KERNEL
	12	#define _KERNEL __KERNEL__
	13	#endif
	14
	15	/* Missing defines.
	16	*/
ed61a7d0	17	#define FALSE 0
ed61a7d0	18	#define TRUE 1
b0dd3380	19
14c5326c	20	#define INT32_MAX INT_MAX
3b3ba48f	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
14c5326c	29	#define NBBY 8
14c5326c	30	#define ENOTSUP ENOTSUPP
b0dd3380	31
05ae387b	32	#define MAXMSGLEN 256
14c5326c	33	#define MAXNAMELEN 256
14c5326c	34	#define MAXPATHLEN PATH_MAX
b0dd3380	35	#define MAXOFFSET_T 0x7fffffffffffffffl
	36
	37	#define MAXBSIZE 8192
	38	#define DEV_BSIZE 512
	39	#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
	40
14c5326c	41	#define max_ncpus 64
12472b24	42	#define CPU_SEQID smp_processor_id() /* I think... */
b0dd3380	43	#define _NOTE(x)
14c5326c	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)
b0dd3380	86	#define bcmp(src,dest,size) memcmp((src), (dest), (size_t)(size))
14c5326c	87	#define ASSERT(x) BUG_ON(!(x))
77b1fe8f	88	#define VERIFY(x) ASSERT(x)
a713518f	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 */
3b3ba48f	110	#define DTRACE_PROBE1(a, b, c) ((void)0)
a713518f	111
	112	#ifdef DTRACE_PROBE2
	113	#undef DTRACE_PROBE2
	114	#endif /* DTRACE_PROBE2 */
3b3ba48f	115	#define DTRACE_PROBE2(a, b, c, d, e) ((void)0)
a713518f	116
	117	#ifdef DTRACE_PROBE3
	118	#undef DTRACE_PROBE3
	119	#endif /* DTRACE_PROBE3 */
3b3ba48f	120	#define DTRACE_PROBE3(a, b, c, d, e, f, g) ((void)0)
a713518f	121
	122	#ifdef DTRACE_PROBE4
	123	#undef DTRACE_PROBE4
	124	#endif /* DTRACE_PROBE4 */
3b3ba48f	125	#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0)
14c5326c	126
77b1fe8f	127	/* Missing globals */
14c5326c	128	extern int p0;
14c5326c	129
77b1fe8f	130	/* Missing misc functions */
	131	extern int highbit(unsigned long i);
	132
14c5326c	133	#define makedevice(maj,min) makedev(maj,min)
3b3ba48f	134	#define zone_dataset_visible(x, y) (1)
3b3ba48f	135	#define INGLOBALZONE(z) (1)
0b3cf046	136	#define utsname system_utsname
14c5326c	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 */