[apple/xnu.git] / bsd / sys / sysent.h

/*
 * Copyright (c) 2004-2007 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

#ifndef _SYS_SYSENT_H_
#define	_SYS_SYSENT_H_

#include <sys/appleapiopts.h>
#include <sys/cdefs.h>

#ifdef KERNEL_PRIVATE
#ifdef __APPLE_API_PRIVATE

typedef	int32_t	sy_call_t(struct proc *, void *, int *);
typedef	void	sy_munge_t(const void *, void *);

struct sysent {		/* system call table */
	int16_t		sy_narg;	/* number of args */
	int8_t		sy_resv;	/* reserved  */
	int8_t		sy_flags;	/* flags */
	sy_call_t	*sy_call;	/* implementing function */
	sy_munge_t	*sy_arg_munge32; /* system call arguments munger for 32-bit process */
	sy_munge_t	*sy_arg_munge64; /* system call arguments munger for 64-bit process */
	int32_t		sy_return_type; /* system call return types */
	uint16_t	sy_arg_bytes;	/* Total size of arguments in bytes for
					 * 32-bit system calls
					 */
};

#ifndef __INIT_SYSENT_C__
extern struct sysent sysent[];
#endif	/* __INIT_SYSENT_C__ */

extern int nsysent;
#define NUM_SYSENT	439	/* Current number of defined syscalls */

/* sy_funnel flags bits */
#define FUNNEL_MASK	0x07f
#define	UNSAFE_64BIT	0x080

/* 
 * Valid values for sy_cancel
 */
#define _SYSCALL_CANCEL_NONE	0		/* Not a cancellation point */
#define _SYSCALL_CANCEL_PRE		1		/* Canbe cancelled on entry itself */
#define _SYSCALL_CANCEL_POST	2		/* Can only be cancelled after syscall is run */

/*
 * Valid values for sy_return_type
 */
#define _SYSCALL_RET_NONE		0
#define _SYSCALL_RET_INT_T		1	
#define _SYSCALL_RET_UINT_T		2	
#define _SYSCALL_RET_OFF_T		3	
#define _SYSCALL_RET_ADDR_T		4	
#define _SYSCALL_RET_SIZE_T		5	
#define _SYSCALL_RET_SSIZE_T	6	
#define _SYSCALL_RET_UINT64_T	7

#endif /* __APPLE_API_PRIVATE */
#endif /* KERNEL_PRIVATE */

#endif /* !_SYS_SYSENT_H_ */
Commit	Line	Data
91447636	1	/*
2d21ac55	2	* Copyright (c) 2004-2007 Apple Inc. All rights reserved.
5d5c5d0d	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
91447636	5	*
2d21ac55 A	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.
8f6c56a5	14	*
2d21ac55 A	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
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	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.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
91447636 A	27	*/
	28
	29	#ifndef _SYS_SYSENT_H_
	30	#define _SYS_SYSENT_H_
	31
	32	#include <sys/appleapiopts.h>
	33	#include <sys/cdefs.h>
91447636 A	34
	35	#ifdef KERNEL_PRIVATE
	36	#ifdef __APPLE_API_PRIVATE
	37
	38	typedef int32_t sy_call_t(struct proc , void , int *);
	39	typedef void sy_munge_t(const void , void );
	40
2d21ac55	41	struct sysent { /* system call table */
91447636	42	int16_t sy_narg; /* number of args */
2d21ac55 A	43	int8_t sy_resv; /* reserved */
2d21ac55 A	44	int8_t sy_flags; /* flags */
91447636	45	sy_call_t sy_call; / implementing function */
2d21ac55 A	46	sy_munge_t sy_arg_munge32; / system call arguments munger for 32-bit process */
2d21ac55 A	47	sy_munge_t sy_arg_munge64; / system call arguments munger for 64-bit process */
91447636	48	int32_t sy_return_type; /* system call return types */
2d21ac55 A	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__
	55	extern struct sysent sysent[];
	56	#endif /* __INIT_SYSENT_C__ */
	57
	58	extern int nsysent;
6d2010ae	59	#define NUM_SYSENT 439 /* Current number of defined syscalls */
91447636 A	60
91447636 A	61	/* sy_funnel flags bits */
2d21ac55 A	62	#define FUNNEL_MASK 0x07f
2d21ac55 A	63	#define UNSAFE_64BIT 0x080
91447636 A	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
d1ecb069	82	#define _SYSCALL_RET_UINT64_T 7
91447636	83
91447636 A	84	#endif /* __APPLE_API_PRIVATE */
	85	#endif /* KERNEL_PRIVATE */
	86
	87	#endif /* !_SYS_SYSENT_H_ */