1/*
2 * Copyright (c) 2004-2014 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 *);
39#if CONFIG_REQUIRES_U32_MUNGING
40typedef	void	sy_munge_t(void *);
41#endif
42
43struct sysent {		/* system call table */
44	sy_call_t	*sy_call;	/* implementing function */
45#if CONFIG_REQUIRES_U32_MUNGING
46	sy_munge_t	*sy_arg_munge32; /* system call arguments munger for 32-bit process */
47#endif
48	int32_t		sy_return_type; /* system call return types */
49	int16_t		sy_narg;	/* number of args */
50	uint16_t	sy_arg_bytes;	/* Total size of arguments in bytes for
51					 * 32-bit system calls
52					 */
53};
54
55#ifndef __INIT_SYSENT_C__
56extern struct sysent sysent[];
57#endif	/* __INIT_SYSENT_C__ */
58
59extern int nsysent;
60#define NUM_SYSENT	490	/* Current number of defined syscalls */
61
62/*
63 * Valid values for sy_cancel
64 */
65#define _SYSCALL_CANCEL_NONE	0		/* Not a cancellation point */
66#define _SYSCALL_CANCEL_PRE		1		/* Canbe cancelled on entry itself */
67#define _SYSCALL_CANCEL_POST	2		/* Can only be cancelled after syscall is run */
68
69/*
70 * Valid values for sy_return_type
71 */
72#define _SYSCALL_RET_NONE		0
73#define _SYSCALL_RET_INT_T		1
74#define _SYSCALL_RET_UINT_T		2
75#define _SYSCALL_RET_OFF_T		3
76#define _SYSCALL_RET_ADDR_T		4
77#define _SYSCALL_RET_SIZE_T		5
78#define _SYSCALL_RET_SSIZE_T	6
79#define _SYSCALL_RET_UINT64_T	7
80
81#endif /* __APPLE_API_PRIVATE */
82#endif /* KERNEL_PRIVATE */
83
84#endif /* !_SYS_SYSENT_H_ */
85