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