1/*
2 * Copyright (c) 2004-2006 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28
29#include <sys/cdefs.h>
30#include <sys/_types.h>
31
32#ifdef __need_ucontext_t
33#ifndef __need_struct_ucontext
34#define __need_struct_ucontext
35#endif /* __need_struct_ucontext */
36#endif /* __need_ucontext_t */
37
38#ifdef __need_ucontext64_t
39#ifndef __need_struct_ucontext64
40#define __need_struct_ucontext64
41#endif /* __need_struct_ucontext64 */
42#endif /* __need_ucontext64_t */
43
44#ifdef __need_struct_ucontext
45#ifndef __need_struct_mcontext
46#define __need_struct_mcontext
47#endif /* __need_struct_mcontext */
48#endif /* __need_struct_ucontext */
49
50#ifdef __need_struct_ucontext64
51#ifndef __need_struct_mcontext64
52#define __need_struct_mcontext64
53#endif /* __need_struct_mcontext64 */
54#endif /* __need_struct_ucontext64 */
55
56#if defined(__need_struct_mcontext) || defined(__need_struct_mcontext64)
57#include <machine/_structs.h>
58#endif /* __need_struct_mcontext || __need_struct_mcontext64 */
59
60#if defined(__need_stack_t) || defined(__need_struct_ucontext) || defined(__need_struct_ucontext64)
61#ifndef __need_struct_sigaltstack
62#define __need_struct_sigaltstack
63#endif /* __need_struct_sigaltstack */
64#endif /* __need_stack_t || __need_struct_ucontext || __need_struct_ucontext64 */
65
66#ifdef __need_struct_sigaltstack
67#undef __need_struct_sigaltstack
68/* Structure used in sigaltstack call. */
69#ifndef _STRUCT_SIGALTSTACK
70#if __DARWIN_UNIX03
71#define _STRUCT_SIGALTSTACK	struct __darwin_sigaltstack
72#else /* !__DARWIN_UNIX03 */
73#define _STRUCT_SIGALTSTACK	struct sigaltstack
74#endif /* __DARWIN_UNIX03 */
75_STRUCT_SIGALTSTACK
76{
77	void		*ss_sp;		/* signal stack base */
78	__darwin_size_t ss_size;	/* signal stack length */
79	int		ss_flags;	/* SA_DISABLE and/or SA_ONSTACK */
80};
81#endif /* _STRUCT_SIGALTSTACK */
82#endif /* __need_struct_sigaltstack */
83
84#ifdef __need_struct_timespec
85#undef __need_struct_timespec
86#ifndef _STRUCT_TIMESPEC
87#define _STRUCT_TIMESPEC	struct timespec
88_STRUCT_TIMESPEC
89{
90	__darwin_time_t	tv_sec;
91	long		tv_nsec;
92};
93#endif /* _STRUCT_TIMESPEC */
94#endif /* __need_struct_timespec */
95
96#ifdef __need_struct_timeval
97#undef __need_struct_timeval
98#ifndef _STRUCT_TIMEVAL
99#define _STRUCT_TIMEVAL		struct timeval
100_STRUCT_TIMEVAL
101{
102	__darwin_time_t		tv_sec;		/* seconds */
103	__darwin_suseconds_t	tv_usec;	/* and microseconds */
104};
105#endif /* _STRUCT_TIMEVAL */
106#endif /* __need_struct_timeval */
107
108#ifdef __need_struct_timeval32
109#undef __need_struct_timeval32
110#ifndef _STRUCT_TIMEVAL32
111#define _STRUCT_TIMEVAL32	struct timeval32
112_STRUCT_TIMEVAL32
113{
114	__int32_t		tv_sec;		/* seconds */
115	__int32_t		tv_usec;	/* and microseconds */
116};
117#endif /* _STRUCT_TIMEVAL32 */
118#endif /* __need_struct_timeval32 */
119
120#ifdef __need_struct_ucontext
121#undef __need_struct_ucontext
122#ifndef _STRUCT_UCONTEXT
123#if __DARWIN_UNIX03
124#define _STRUCT_UCONTEXT	struct __darwin_ucontext
125#else /* !__DARWIN_UNIX03 */
126#define _STRUCT_UCONTEXT	struct ucontext
127#endif /* __DARWIN_UNIX03 */
128_STRUCT_UCONTEXT
129{
130	int			uc_onstack;
131	__darwin_sigset_t	uc_sigmask;	/* signal mask used by this context */
132	_STRUCT_SIGALTSTACK 	uc_stack;	/* stack used by this context */
133	_STRUCT_UCONTEXT	*uc_link;	/* pointer to resuming context */
134	__darwin_size_t		uc_mcsize;	/* size of the machine context passed in */
135	_STRUCT_MCONTEXT	*uc_mcontext;	/* pointer to machine specific context */
136#ifdef _XOPEN_SOURCE
137	_STRUCT_MCONTEXT	__mcontext_data;
138#endif /* _XOPEN_SOURCE */
139};
140#endif /* _STRUCT_UCONTEXT */
141#endif /* __need_struct_ucontext */
142
143#ifdef __need_struct_ucontext64
144#undef __need_struct_ucontext64
145#ifndef _STRUCT_UCONTEXT64
146#if __DARWIN_UNIX03
147#define _STRUCT_UCONTEXT64	struct __darwin_ucontext64
148#else /* !__DARWIN_UNIX03 */
149#define _STRUCT_UCONTEXT64	struct ucontext64
150#endif /* __DARWIN_UNIX03 */
151_STRUCT_UCONTEXT64
152{
153	int			uc_onstack;
154	__darwin_sigset_t	uc_sigmask;	/* signal mask used by this context */
155	_STRUCT_SIGALTSTACK 	uc_stack;	/* stack used by this context */
156	_STRUCT_UCONTEXT64	*uc_link;	/* pointer to resuming context */
157	__darwin_size_t		uc_mcsize;	/* size of the machine context passed in */
158	_STRUCT_MCONTEXT64	*uc_mcontext64;	/* pointer to machine specific context */
159};
160#endif /* _STRUCT_UCONTEXT64 */
161#endif /* __need_struct_ucontext64 */
162
163#ifdef KERNEL
164/* LP64 version of struct timespec.  time_t is a long and must grow when
165 * we're dealing with a 64-bit process.
166 * WARNING - keep in sync with struct timespec
167 */
168#ifdef __need_struct_user_timespec
169#undef __need_struct_user_timespec
170#ifndef _STRUCT_USER_TIMESPEC
171#define _STRUCT_USER_TIMESPEC	struct user_timespec
172_STRUCT_USER_TIMESPEC
173{
174	user_time_t	tv_sec;		/* seconds */
175	user_long_t	tv_nsec;	/* and nanoseconds */
176};
177#endif /* _STRUCT_USER_TIMESPEC */
178#endif /* __need_struct_user_timespec */
179
180#ifdef __need_struct_user64_timespec
181#undef __need_struct_user64_timespec
182#ifndef _STRUCT_USER64_TIMESPEC
183#define _STRUCT_USER64_TIMESPEC	struct user64_timespec
184_STRUCT_USER64_TIMESPEC
185{
186	user64_time_t	tv_sec;		/* seconds */
187	user64_long_t	tv_nsec;	/* and nanoseconds */
188};
189#endif /* _STRUCT_USER64_TIMESPEC */
190#endif /* __need_struct_user64_timespec */
191
192#ifdef __need_struct_user32_timespec
193#undef __need_struct_user32_timespec
194#ifndef _STRUCT_USER32_TIMESPEC
195#define _STRUCT_USER32_TIMESPEC	struct user32_timespec
196_STRUCT_USER32_TIMESPEC
197{
198	user32_time_t	tv_sec;		/* seconds */
199	user32_long_t	tv_nsec;	/* and nanoseconds */
200};
201#endif /* _STRUCT_USER32_TIMESPEC */
202#endif /* __need_struct_user32_timespec */
203
204#ifdef __need_struct_user_timeval
205#undef __need_struct_user_timeval
206#ifndef _STRUCT_USER_TIMEVAL
207#define _STRUCT_USER_TIMEVAL		struct user_timeval
208_STRUCT_USER_TIMEVAL
209{
210	user_time_t		tv_sec;		/* seconds */
211	__int32_t		tv_usec;	/* and microseconds */
212};
213#endif /* _STRUCT_USER_TIMEVAL */
214#endif /* __need_struct_user_timeval */
215
216#ifdef __need_struct_user64_timeval
217#undef __need_struct_user64_timeval
218#ifndef _STRUCT_USER64_TIMEVAL
219#define _STRUCT_USER64_TIMEVAL		struct user64_timeval
220_STRUCT_USER64_TIMEVAL
221{
222	user64_time_t		tv_sec;		/* seconds */
223	__int32_t			tv_usec;	/* and microseconds */
224};
225#endif /* _STRUCT_USER64_TIMEVAL */
226#endif /* __need_struct_user64_timeval */
227
228#ifdef __need_struct_user32_timeval
229#undef __need_struct_user32_timeval
230#ifndef _STRUCT_USER32_TIMEVAL
231#define _STRUCT_USER32_TIMEVAL		struct user32_timeval
232_STRUCT_USER32_TIMEVAL
233{
234	user32_time_t		tv_sec;		/* seconds */
235	__int32_t		tv_usec;	/* and microseconds */
236};
237#endif /* _STRUCT_USER32_TIMEVAL */
238#endif /* __need_struct_user32_timeval */
239
240#ifdef __need_struct_user64_itimerval
241#undef __need_struct_user64_itimerval
242#ifndef _STRUCT_USER64_ITIMERVAL
243#define _STRUCT_USER64_ITIMERVAL		struct user64_itimerval
244_STRUCT_USER64_ITIMERVAL
245{
246	_STRUCT_USER64_TIMEVAL	it_interval;	/* timer interval */
247	_STRUCT_USER64_TIMEVAL	it_value;		/* current value */
248};
249#endif /* _STRUCT_USER64_TIMEVAL */
250#endif /* __need_struct_user64_itimerval */
251
252#ifdef __need_struct_user32_itimerval
253#undef __need_struct_user32_itimerval
254#ifndef _STRUCT_USER32_ITIMERVAL
255#define _STRUCT_USER32_ITIMERVAL		struct user32_itimerval
256_STRUCT_USER32_ITIMERVAL
257{
258	_STRUCT_USER32_TIMEVAL	it_interval;	/* timer interval */
259	_STRUCT_USER32_TIMEVAL	it_value;		/* current value */
260};
261#endif /* _STRUCT_USER32_TIMEVAL */
262#endif /* __need_struct_user32_itimerval */
263
264#endif	/* KERNEL */
265
266#ifdef __need_fd_set
267#undef __need_fd_set
268#ifndef _FD_SET
269#define _FD_SET
270/*
271 * Select uses bit masks of file descriptors in longs.  These macros
272 * manipulate such bit fields (the filesystem macros use chars).  The
273 * extra protection here is to permit application redefinition above
274 * the default size.
275 */
276#ifdef FD_SETSIZE
277#define	__DARWIN_FD_SETSIZE	FD_SETSIZE
278#else /* !FD_SETSIZE */
279#define	__DARWIN_FD_SETSIZE	1024
280#endif /* FD_SETSIZE */
281#define	__DARWIN_NBBY		8				/* bits in a byte */
282#define __DARWIN_NFDBITS	(sizeof(__int32_t) * __DARWIN_NBBY) /* bits per mask */
283#define	__DARWIN_howmany(x, y)	((((x) % (y)) == 0) ? ((x) / (y)) : (((x) / (y)) + 1)) /* # y's == x bits? */
284
285__BEGIN_DECLS
286typedef	struct fd_set {
287	__int32_t	fds_bits[__DARWIN_howmany(__DARWIN_FD_SETSIZE, __DARWIN_NFDBITS)];
288} fd_set;
289__END_DECLS
290
291/* This inline avoids argument side-effect issues with FD_ISSET() */
292static __inline int
293__darwin_fd_isset(int _n, const struct fd_set *_p)
294{
295	return (_p->fds_bits[_n/__DARWIN_NFDBITS] & (1<<(_n % __DARWIN_NFDBITS)));
296}
297
298#define	__DARWIN_FD_SET(n, p)	do { int __fd = (n); ((p)->fds_bits[__fd/__DARWIN_NFDBITS] |= (1<<(__fd % __DARWIN_NFDBITS))); } while(0)
299#define	__DARWIN_FD_CLR(n, p)	do { int __fd = (n); ((p)->fds_bits[__fd/__DARWIN_NFDBITS] &= ~(1<<(__fd % __DARWIN_NFDBITS))); } while(0)
300#define	__DARWIN_FD_ISSET(n, p)	__darwin_fd_isset((n), (p))
301
302#if __GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ >= 3
303/*
304 * Use the built-in bzero function instead of the library version so that
305 * we do not pollute the namespace or introduce prototype warnings.
306 */
307#define	__DARWIN_FD_ZERO(p)	__builtin_bzero(p, sizeof(*(p)))
308#else
309#define	__DARWIN_FD_ZERO(p)	bzero(p, sizeof(*(p)))
310#endif
311
312#define	__DARWIN_FD_COPY(f, t)	bcopy(f, t, sizeof(*(f)))
313#endif /* _FD_SET */
314#endif /* __need_fd_set */
315
316#ifdef __need_stack_t
317#undef __need_stack_t
318#ifndef _STACK_T
319#define _STACK_T
320typedef _STRUCT_SIGALTSTACK	stack_t; /* [???] signal stack */
321#endif /* _STACK_T */
322#endif /* __need_stack_t */
323
324#ifdef __need_ucontext_t
325#undef __need_ucontext_t
326/* user context */
327#ifndef _UCONTEXT_T
328#define _UCONTEXT_T
329typedef _STRUCT_UCONTEXT	ucontext_t;	/* [???] user context */
330#endif /* _UCONTEXT_T */
331#endif /* __need_ucontext_t */
332
333#ifdef __need_ucontext64_t
334#undef __need_ucontext64_t
335#ifndef _UCONTEXT64_T
336#define _UCONTEXT64_T
337typedef _STRUCT_UCONTEXT64	ucontext64_t;	/* [???] user context */
338#endif /* _UCONTEXT64_T */
339#endif /* __need_ucontext64_t */
340