1/*
2 * Copyright (c) 2004-2007 Apple 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#ifndef _SYS_SYSENT_H_
30#define	_SYS_SYSENT_H_
31
32#include <sys/appleapiopts.h>
33#include <sys/cdefs.h>
34
35#ifdef KERNEL_PRIVATE
36#ifdef __APPLE_API_PRIVATE
37
38typedef	int32_t	sy_call_t(struct proc *, void *, int *);
39typedef	void	sy_munge_t(const void *, void *);
40
41struct sysent {		/* system call table */
42	int16_t		sy_narg;	/* number of args */
43	int8_t		sy_resv;	/* reserved  */
44	int8_t		sy_flags;	/* flags */
45	sy_call_t	*sy_call;	/* implementing function */
46	sy_munge_t	*sy_arg_munge32; /* system call arguments munger for 32-bit process */
47	sy_munge_t	*sy_arg_munge64; /* system call arguments munger for 64-bit process */
48	int32_t		sy_return_type; /* system call return types */
49	uint16_t	sy_arg_bytes;	/* Total size of arguments in bytes for
50					 * 32-bit system calls
51					 */
52};
53
54#ifndef __INIT_SYSENT_C__
55extern struct sysent sysent[];
56#endif	/* __INIT_SYSENT_C__ */
57
58extern int nsysent;
59#define NUM_SYSENT	440	/* Current number of defined syscalls */
60
61/* sy_funnel flags bits */
62#define FUNNEL_MASK	0x07f
63#define	UNSAFE_64BIT	0x080
64
65/*
66 * Valid values for sy_cancel
67 */
68#define _SYSCALL_CANCEL_NONE	0		/* Not a cancellation point */
69#define _SYSCALL_CANCEL_PRE		1		/* Canbe cancelled on entry itself */
70#define _SYSCALL_CANCEL_POST	2		/* Can only be cancelled after syscall is run */
71
72/*
73 * Valid values for sy_return_type
74 */
75#define _SYSCALL_RET_NONE		0
76#define _SYSCALL_RET_INT_T		1
77#define _SYSCALL_RET_UINT_T		2
78#define _SYSCALL_RET_OFF_T		3
79#define _SYSCALL_RET_ADDR_T		4
80#define _SYSCALL_RET_SIZE_T		5
81#define _SYSCALL_RET_SSIZE_T	6
82#define _SYSCALL_RET_UINT64_T	7
83
84#endif /* __APPLE_API_PRIVATE */
85#endif /* KERNEL_PRIVATE */
86
87#endif /* !_SYS_SYSENT_H_ */
88