xref: /illumos-gate/usr/src/uts/common/sys/types.h (revision b819cea2f73f98c5662230cc9affc8cc84f77fcf)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
22 /*	  All Rights Reserved  	*/
23 
24 
25 /*
26  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
27  * Use is subject to license terms.
28  *
29  * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
30  */
31 
32 #ifndef _SYS_TYPES_H
33 #define	_SYS_TYPES_H
34 
35 #include <sys/feature_tests.h>
36 #include <sys/isa_defs.h>
37 
38 /*
39  * Machine dependent definitions moved to <sys/machtypes.h>.
40  */
41 #include <sys/machtypes.h>
42 
43 /*
44  * Include fixed width type declarations proposed by the ISO/JTC1/SC22/WG14 C
45  * committee's working draft for the revision of the current ISO C standard,
46  * ISO/IEC 9899:1990 Programming language - C.  These are not currently
47  * required by any standard but constitute a useful, general purpose set
48  * of type definitions which is namespace clean with respect to all standards.
49  */
50 #ifdef	_KERNEL
51 #include <sys/inttypes.h>
52 #else	/* _KERNEL */
53 #include <sys/int_types.h>
54 #endif	/* _KERNEL */
55 
56 #if defined(_KERNEL) || defined(_SYSCALL32)
57 #include <sys/types32.h>
58 #endif
59 
60 #ifdef	__cplusplus
61 extern "C" {
62 #endif
63 
64 /*
65  * Strictly conforming ANSI C environments prior to the 1999
66  * revision of the C Standard (ISO/IEC 9899:1999) do not have
67  * the long long data type.
68  */
69 #if defined(_LONGLONG_TYPE)
70 typedef	long long		longlong_t;
71 typedef	unsigned long long	u_longlong_t;
72 #else
73 /* used to reserve space and generate alignment */
74 typedef union {
75 	double	_d;
76 	int32_t	_l[2];
77 } longlong_t;
78 typedef union {
79 	double		_d;
80 	uint32_t	_l[2];
81 } u_longlong_t;
82 #endif	/* defined(_LONGLONG_TYPE) */
83 
84 /*
85  * These types (t_{u}scalar_t) exist because the XTI/TPI/DLPI standards had
86  * to use them instead of int32_t and uint32_t because DEC had
87  * shipped 64-bit wide.
88  */
89 #if defined(_LP64) || defined(_I32LPx)
90 typedef int32_t		t_scalar_t;
91 typedef uint32_t	t_uscalar_t;
92 #else
93 typedef long		t_scalar_t;	/* historical versions */
94 typedef unsigned long	t_uscalar_t;
95 #endif	/* defined(_LP64) || defined(_I32LPx) */
96 
97 /*
98  * POSIX Extensions
99  */
100 typedef	unsigned char	uchar_t;
101 typedef	unsigned short	ushort_t;
102 typedef	unsigned int	uint_t;
103 typedef	unsigned long	ulong_t;
104 
105 typedef	char		*caddr_t;	/* ?<core address> type */
106 typedef	long		daddr_t;	/* <disk address> type */
107 typedef	short		cnt_t;		/* ?<count> type */
108 
109 #if !defined(_PTRDIFF_T) || __cplusplus >= 199711L
110 #define	_PTRDIFF_T
111 #if defined(_LP64) || defined(_I32LPx)
112 typedef	long	ptrdiff_t;		/* pointer difference */
113 #else
114 typedef	int	ptrdiff_t;		/* (historical version) */
115 #endif
116 #endif
117 
118 /*
119  * VM-related types
120  */
121 typedef	ulong_t		pfn_t;		/* page frame number */
122 typedef	ulong_t		pgcnt_t;	/* number of pages */
123 typedef	long		spgcnt_t;	/* signed number of pages */
124 
125 typedef	uchar_t		use_t;		/* use count for swap.  */
126 typedef	short		sysid_t;
127 typedef	short		index_t;
128 typedef void		*timeout_id_t;	/* opaque handle from timeout(9F) */
129 typedef void		*bufcall_id_t;	/* opaque handle from bufcall(9F) */
130 
131 /*
132  * The size of off_t and related types depends on the setting of
133  * _FILE_OFFSET_BITS.  (Note that other system headers define other types
134  * related to those defined here.)
135  *
136  * If _LARGEFILE64_SOURCE is defined, variants of these types that are
137  * explicitly 64 bits wide become available.
138  */
139 #ifndef _OFF_T
140 #define	_OFF_T
141 
142 #if defined(_LP64) || _FILE_OFFSET_BITS == 32
143 typedef long		off_t;		/* offsets within files */
144 #elif _FILE_OFFSET_BITS == 64
145 typedef longlong_t	off_t;		/* offsets within files */
146 #endif
147 
148 #if defined(_LARGEFILE64_SOURCE)
149 #ifdef _LP64
150 typedef	off_t		off64_t;	/* offsets within files */
151 #else
152 typedef longlong_t	off64_t;	/* offsets within files */
153 #endif
154 #endif	/* _LARGEFILE64_SOURCE */
155 
156 #endif /* _OFF_T */
157 
158 #if defined(_LP64) || _FILE_OFFSET_BITS == 32
159 typedef ulong_t		ino_t;		/* expanded inode type	*/
160 typedef long		blkcnt_t;	/* count of file blocks */
161 typedef ulong_t		fsblkcnt_t;	/* count of file system blocks */
162 typedef ulong_t		fsfilcnt_t;	/* count of files */
163 #elif _FILE_OFFSET_BITS == 64
164 typedef u_longlong_t	ino_t;		/* expanded inode type	*/
165 typedef longlong_t	blkcnt_t;	/* count of file blocks */
166 typedef u_longlong_t	fsblkcnt_t;	/* count of file system blocks */
167 typedef u_longlong_t	fsfilcnt_t;	/* count of files */
168 #endif
169 
170 #if defined(_LARGEFILE64_SOURCE)
171 #ifdef _LP64
172 typedef	ino_t		ino64_t;	/* expanded inode type */
173 typedef	blkcnt_t	blkcnt64_t;	/* count of file blocks */
174 typedef	fsblkcnt_t	fsblkcnt64_t;	/* count of file system blocks */
175 typedef	fsfilcnt_t	fsfilcnt64_t;	/* count of files */
176 #else
177 typedef u_longlong_t	ino64_t;	/* expanded inode type	*/
178 typedef longlong_t	blkcnt64_t;	/* count of file blocks */
179 typedef u_longlong_t	fsblkcnt64_t;	/* count of file system blocks */
180 typedef u_longlong_t	fsfilcnt64_t;	/* count of files */
181 #endif
182 #endif	/* _LARGEFILE64_SOURCE */
183 
184 #ifdef _LP64
185 typedef	int		blksize_t;	/* used for block sizes */
186 #else
187 typedef	long		blksize_t;	/* used for block sizes */
188 #endif
189 
190 #if defined(__XOPEN_OR_POSIX)
191 typedef enum { _B_FALSE, _B_TRUE } boolean_t;
192 #else
193 typedef enum { B_FALSE, B_TRUE } boolean_t;
194 #ifdef _KERNEL
195 #define	VALID_BOOLEAN(x)	(((x) == B_FALSE) || ((x) == B_TRUE))
196 #define	VOID2BOOLEAN(x)		(((uintptr_t)(x) == 0) ? B_FALSE : B_TRUE)
197 #endif /* _KERNEL */
198 #endif /* defined(__XOPEN_OR_POSIX) */
199 
200 #ifdef _KERNEL
201 #define	BOOLEAN2VOID(x)		((x) ? 1 : 0)
202 #endif /* _KERNEL */
203 
204 /*
205  * The {u,}pad64_t types can be used in structures such that those structures
206  * may be accessed by code produced by compilation environments which don't
207  * support a 64 bit integral datatype.  The intention is not to allow
208  * use of these fields in such environments, but to maintain the alignment
209  * and offsets of the structure.
210  *
211  * Similar comments for {u,}pad128_t.
212  *
213  * Note that these types do NOT generate any stronger alignment constraints
214  * than those available in the underlying ABI.  See <sys/isa_defs.h>
215  */
216 #if defined(_INT64_TYPE)
217 typedef int64_t		pad64_t;
218 typedef	uint64_t	upad64_t;
219 #else
220 typedef union {
221 	double   _d;
222 	int32_t  _l[2];
223 } pad64_t;
224 
225 typedef union {
226 	double   _d;
227 	uint32_t _l[2];
228 } upad64_t;
229 #endif
230 
231 typedef union {
232 	long double	_q;
233 	int32_t		_l[4];
234 } pad128_t;
235 
236 typedef union {
237 	long double	_q;
238 	uint32_t	_l[4];
239 } upad128_t;
240 
241 typedef	longlong_t	offset_t;
242 typedef	u_longlong_t	u_offset_t;
243 typedef u_longlong_t	len_t;
244 typedef	u_longlong_t	diskaddr_t;
245 #if (defined(_KERNEL) || defined(_KMEMUSER) || defined(_BOOT))
246 typedef	uint64_t	paddr_t;
247 #endif
248 
249 /*
250  * Definitions remaining from previous partial support for 64-bit file
251  * offsets.  This partial support for devices greater than 2gb requires
252  * compiler support for long long.
253  */
254 #ifdef _LONG_LONG_LTOH
255 typedef union {
256 	offset_t	_f;	/* Full 64 bit offset value */
257 	struct {
258 		int32_t	_l;	/* lower 32 bits of offset value */
259 		int32_t	_u;	/* upper 32 bits of offset value */
260 	} _p;
261 } lloff_t;
262 #endif
263 
264 #ifdef _LONG_LONG_HTOL
265 typedef union {
266 	offset_t	_f;	/* Full 64 bit offset value */
267 	struct {
268 		int32_t	_u;	/* upper 32 bits of offset value */
269 		int32_t	_l;	/* lower 32 bits of offset value */
270 	} _p;
271 } lloff_t;
272 #endif
273 
274 #ifdef _LONG_LONG_LTOH
275 typedef union {
276 	longlong_t	_f;	/* Full 64 bit disk address value */
277 	struct {
278 		int32_t	_l;	/* lower 32 bits of disk address value */
279 		int32_t	_u;	/* upper 32 bits of disk address value */
280 	} _p;
281 } lldaddr_t;
282 #endif
283 
284 #ifdef _LONG_LONG_HTOL
285 typedef union {
286 	longlong_t	_f;	/* Full 64 bit disk address value */
287 	struct {
288 		int32_t	_u;	/* upper 32 bits of disk address value */
289 		int32_t	_l;	/* lower 32 bits of disk address value */
290 	} _p;
291 } lldaddr_t;
292 #endif
293 
294 typedef uint_t k_fltset_t;	/* kernel fault set type */
295 
296 /*
297  * The following type is for various kinds of identifiers.  The
298  * actual type must be the same for all since some system calls
299  * (such as sigsend) take arguments that may be any of these
300  * types.  The enumeration type idtype_t defined in sys/procset.h
301  * is used to indicate what type of id is being specified --
302  * a process id, process group id, session id, scheduling class id,
303  * user id, group id, project id, task id or zone id.
304  */
305 #if defined(_LP64) || defined(_I32LPx)
306 typedef int		id_t;
307 #else
308 typedef	long		id_t;		/* (historical version) */
309 #endif
310 
311 typedef id_t		lgrp_id_t;	/* lgroup ID */
312 
313 /*
314  * Type useconds_t is an unsigned integral type capable of storing
315  * values at least in the range of zero to 1,000,000.
316  */
317 typedef uint_t		useconds_t;	/* Time, in microseconds */
318 
319 #ifndef	_SUSECONDS_T
320 #define	_SUSECONDS_T
321 typedef long	suseconds_t;	/* signed # of microseconds */
322 #endif	/* _SUSECONDS_T */
323 
324 /*
325  * Typedefs for dev_t components.
326  */
327 #if defined(_LP64) || defined(_I32LPx)
328 typedef uint_t	major_t;	/* major part of device number */
329 typedef uint_t	minor_t;	/* minor part of device number */
330 #else
331 typedef ulong_t	major_t;	/* (historical version) */
332 typedef ulong_t	minor_t;	/* (historical version) */
333 #endif
334 
335 /*
336  * The data type of a thread priority.
337  */
338 typedef short	pri_t;
339 
340 /*
341  * The data type for a CPU flags field.  (Can be extended to larger unsigned
342  * types, if needed, limited by ability to update atomically.)
343  */
344 typedef ushort_t	cpu_flag_t;
345 
346 /*
347  * For compatibility reasons the following typedefs (prefixed o_)
348  * can't grow regardless of the EFT definition. Although,
349  * applications should not explicitly use these typedefs
350  * they may be included via a system header definition.
351  * WARNING: These typedefs may be removed in a future
352  * release.
353  *		ex. the definitions in s5inode.h (now obsoleted)
354  *			remained small to preserve compatibility
355  *			in the S5 file system type.
356  */
357 typedef	ushort_t o_mode_t;		/* old file attribute type */
358 typedef short	o_dev_t;		/* old device type	*/
359 typedef	ushort_t o_uid_t;		/* old UID type		*/
360 typedef	o_uid_t	o_gid_t;		/* old GID type		*/
361 typedef	short	o_nlink_t;		/* old file link type	*/
362 typedef short	o_pid_t;		/* old process id type	*/
363 typedef ushort_t o_ino_t;		/* old inode type	*/
364 
365 
366 /*
367  * POSIX and XOPEN Declarations
368  */
369 typedef	int	key_t;			/* IPC key type		*/
370 #if defined(_LP64) || defined(_I32LPx)
371 typedef	uint_t	mode_t;			/* file attribute type	*/
372 #else
373 typedef	ulong_t	mode_t;			/* (historical version) */
374 #endif
375 
376 #ifndef	_UID_T
377 #define	_UID_T
378 typedef	unsigned int uid_t;		/* UID type		*/
379 #endif	/* _UID_T */
380 
381 typedef	uid_t	gid_t;			/* GID type		*/
382 
383 typedef uint32_t	datalink_id_t;
384 typedef	uint32_t	vrid_t;
385 
386 typedef id_t    taskid_t;
387 typedef id_t    projid_t;
388 typedef	id_t	poolid_t;
389 typedef id_t	zoneid_t;
390 typedef id_t	ctid_t;
391 
392 /*
393  * POSIX definitions are same as defined in thread.h and synch.h.
394  * Any changes made to here should be reflected in corresponding
395  * files as described in comments.
396  */
397 typedef	uint_t	pthread_t;	/* = thread_t in thread.h */
398 typedef	uint_t	pthread_key_t;	/* = thread_key_t in thread.h */
399 
400 /* "Magic numbers" tagging synchronization object types */
401 #define	_MUTEX_MAGIC	0x4d58		/* "MX" */
402 #define	_SEMA_MAGIC	0x534d		/* "SM" */
403 #define	_COND_MAGIC	0x4356		/* "CV" */
404 #define	_RWL_MAGIC	0x5257		/* "RW" */
405 
406 typedef	struct _pthread_mutex {		/* = mutex_t in synch.h */
407 	struct {
408 		uint16_t	__pthread_mutex_flag1;
409 		uint8_t		__pthread_mutex_flag2;
410 		uint8_t		__pthread_mutex_ceiling;
411 		uint16_t 	__pthread_mutex_type;
412 		uint16_t 	__pthread_mutex_magic;
413 	} __pthread_mutex_flags;
414 	union {
415 		struct {
416 			uint8_t	__pthread_mutex_pad[8];
417 		} __pthread_mutex_lock64;
418 		struct {
419 			uint32_t __pthread_ownerpid;
420 			uint32_t __pthread_lockword;
421 		} __pthread_mutex_lock32;
422 		upad64_t __pthread_mutex_owner64;
423 	} __pthread_mutex_lock;
424 	upad64_t __pthread_mutex_data;
425 } pthread_mutex_t;
426 
427 typedef	struct _pthread_cond {		/* = cond_t in synch.h */
428 	struct {
429 		uint8_t		__pthread_cond_flag[4];
430 		uint16_t 	__pthread_cond_type;
431 		uint16_t 	__pthread_cond_magic;
432 	} __pthread_cond_flags;
433 	upad64_t __pthread_cond_data;
434 } pthread_cond_t;
435 
436 /*
437  * UNIX 98 Extension
438  */
439 typedef	struct _pthread_rwlock {	/* = rwlock_t in synch.h */
440 	int32_t		__pthread_rwlock_readers;
441 	uint16_t	__pthread_rwlock_type;
442 	uint16_t	__pthread_rwlock_magic;
443 	pthread_mutex_t	__pthread_rwlock_mutex;
444 	pthread_cond_t	__pthread_rwlock_readercv;
445 	pthread_cond_t	__pthread_rwlock_writercv;
446 } pthread_rwlock_t;
447 
448 /*
449  * SUSV3
450  */
451 typedef struct {
452 	uint32_t	__pthread_barrier_count;
453 	uint32_t	__pthread_barrier_current;
454 	upad64_t	__pthread_barrier_cycle;
455 	upad64_t	__pthread_barrier_reserved;
456 	pthread_mutex_t	__pthread_barrier_lock;
457 	pthread_cond_t	__pthread_barrier_cond;
458 } pthread_barrier_t;
459 
460 typedef	pthread_mutex_t	pthread_spinlock_t;
461 
462 /*
463  * attributes for threads, dynamically allocated by library
464  */
465 typedef struct _pthread_attr {
466 	void	*__pthread_attrp;
467 } pthread_attr_t;
468 
469 /*
470  * attributes for mutex, dynamically allocated by library
471  */
472 typedef struct _pthread_mutexattr {
473 	void	*__pthread_mutexattrp;
474 } pthread_mutexattr_t;
475 
476 /*
477  * attributes for cond, dynamically allocated by library
478  */
479 typedef struct _pthread_condattr {
480 	void	*__pthread_condattrp;
481 } pthread_condattr_t;
482 
483 /*
484  * pthread_once
485  */
486 typedef	struct _once {
487 	upad64_t	__pthread_once_pad[4];
488 } pthread_once_t;
489 
490 /*
491  * UNIX 98 Extensions
492  * attributes for rwlock, dynamically allocated by library
493  */
494 typedef struct _pthread_rwlockattr {
495 	void	*__pthread_rwlockattrp;
496 } pthread_rwlockattr_t;
497 
498 /*
499  * SUSV3
500  * attributes for pthread_barrier_t, dynamically allocated by library
501  */
502 typedef struct {
503 	void	*__pthread_barrierattrp;
504 } pthread_barrierattr_t;
505 
506 typedef ulong_t	dev_t;			/* expanded device type */
507 
508 #if defined(_LP64) || defined(_I32LPx)
509 typedef	uint_t nlink_t;			/* file link type	*/
510 typedef int	pid_t;			/* process id type	*/
511 #else
512 typedef	ulong_t	nlink_t;		/* (historical version) */
513 typedef	long	pid_t;			/* (historical version) */
514 #endif
515 
516 #if !defined(_SIZE_T) || __cplusplus >= 199711L
517 #define	_SIZE_T
518 #if defined(_LP64) || defined(_I32LPx)
519 typedef	ulong_t	size_t;		/* size of something in bytes */
520 #else
521 typedef	uint_t	size_t;		/* (historical version) */
522 #endif
523 #endif	/* _SIZE_T */
524 
525 #ifndef _SSIZE_T
526 #define	_SSIZE_T
527 #if defined(_LP64) || defined(_I32LPx)
528 typedef long	ssize_t;	/* size of something in bytes or -1 */
529 #else
530 typedef int	ssize_t;	/* (historical version) */
531 #endif
532 #endif	/* _SSIZE_T */
533 
534 #if !defined(_TIME_T) || __cplusplus >= 199711L
535 #define	_TIME_T
536 typedef	long		time_t;	/* time of day in seconds */
537 #endif	/* _TIME_T */
538 
539 #if !defined(_CLOCK_T) || __cplusplus >= 199711L
540 #define	_CLOCK_T
541 typedef	long		clock_t; /* relative time in a specified resolution */
542 #endif	/* ifndef _CLOCK_T */
543 
544 #ifndef _CLOCKID_T
545 #define	_CLOCKID_T
546 typedef	int	clockid_t;	/* clock identifier type */
547 #endif	/* ifndef _CLOCKID_T */
548 
549 #ifndef _TIMER_T
550 #define	_TIMER_T
551 typedef	int	timer_t;	/* timer identifier type */
552 #endif	/* ifndef _TIMER_T */
553 
554 #if !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__)
555 
556 /* BEGIN CSTYLED */
557 typedef	unsigned char	unchar;
558 typedef	unsigned short	ushort;
559 typedef	unsigned int	uint;
560 typedef	unsigned long	ulong;
561 /* END CSTYLED */
562 
563 #if defined(_KERNEL) || defined(_FAKE_KERNEL)
564 
565 #define	SHRT_MIN	(-32768)	/* min value of a "short int" */
566 #define	SHRT_MAX	32767		/* max value of a "short int" */
567 #define	USHRT_MAX	65535		/* max of "unsigned short int" */
568 #define	INT_MIN		(-2147483647-1) /* min value of an "int" */
569 #define	INT_MAX		2147483647	/* max value of an "int" */
570 #define	UINT_MAX	4294967295U	/* max value of an "unsigned int" */
571 #if defined(_LP64)
572 #define	LONG_MIN	(-9223372036854775807L-1L)
573 					/* min value of a "long int" */
574 #define	LONG_MAX	9223372036854775807L
575 					/* max value of a "long int" */
576 #define	ULONG_MAX	18446744073709551615UL
577 					/* max of "unsigned long int" */
578 #else /* _ILP32 */
579 #define	LONG_MIN	(-2147483647L-1L)
580 					/* min value of a "long int" */
581 #define	LONG_MAX	2147483647L	/* max value of a "long int" */
582 #define	ULONG_MAX	4294967295UL	/* max of "unsigned long int" */
583 #endif
584 
585 #define	LLONG_MIN	(-9223372036854775807LL-1LL)
586 					/* min of "long long int" */
587 #define	LLONG_MAX	9223372036854775807LL
588 					/* max of "long long int" */
589 #define	ULLONG_MAX	18446744073709551615ULL
590 					/* max of "unsigned long long int" */
591 
592 #endif	/* defined(_KERNEL) */
593 
594 #define	P_MYPID	((pid_t)0)
595 
596 /*
597  * The following is the value of type id_t to use to indicate the
598  * caller's current id.  See procset.h for the type idtype_t
599  * which defines which kind of id is being specified.
600  */
601 #define	P_MYID	(-1)
602 #define	NOPID (pid_t)(-1)
603 
604 #ifndef NODEV
605 #define	NODEV	(dev_t)(-1l)
606 #ifdef _SYSCALL32
607 #define	NODEV32	(dev32_t)(-1)
608 #endif	/* _SYSCALL32 */
609 #endif	/* NODEV */
610 
611 /*
612  * The following value of type pfn_t is used to indicate
613  * invalid page frame number.
614  */
615 #define	PFN_INVALID	((pfn_t)-1)
616 #define	PFN_SUSPENDED	((pfn_t)-2)
617 
618 /* BEGIN CSTYLED */
619 typedef unsigned char	u_char;
620 typedef unsigned short	u_short;
621 typedef unsigned int	u_int;
622 typedef unsigned long	u_long;
623 typedef struct _quad { int val[2]; } quad_t;	/* used by UFS */
624 typedef quad_t		quad;			/* used by UFS */
625 /* END CSTYLED */
626 
627 /*
628  * Nested include for BSD/sockets source compatibility.
629  * (The select macros used to be defined here).
630  */
631 #include <sys/select.h>
632 
633 #endif	/* !defined(__XOPEN_OR_POSIX) || defined(__EXTENSIONS__) */
634 
635 /*
636  * _VOID was defined to be either void or char but this is not
637  * required because previous SunOS compilers have accepted the void
638  * type. However, because many system header and source files use the
639  * void keyword, the volatile keyword, and ANSI C function prototypes,
640  * non-ANSI compilers cannot compile the system anyway. The _VOID macro
641  * should therefore not be used and remains for source compatibility
642  * only.
643  */
644 /* CSTYLED */
645 #define	_VOID	void
646 
647 #ifdef	__cplusplus
648 }
649 #endif
650 
651 #endif	/* _SYS_TYPES_H */
652