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