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 | #endif |
42 | |
43 | struct 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 | extern const struct sysent sysent[]; |
56 | extern const unsigned int nsysent; |
57 | |
58 | /* |
59 | * Valid values for sy_cancel |
60 | */ |
61 | #define _SYSCALL_CANCEL_NONE 0 /* Not a cancellation point */ |
62 | #define _SYSCALL_CANCEL_PRE 1 /* Canbe cancelled on entry itself */ |
63 | #define _SYSCALL_CANCEL_POST 2 /* Can only be cancelled after syscall is run */ |
64 | |
65 | /* |
66 | * Valid values for sy_return_type |
67 | */ |
68 | #define _SYSCALL_RET_NONE 0 |
69 | #define _SYSCALL_RET_INT_T 1 |
70 | #define _SYSCALL_RET_UINT_T 2 |
71 | #define _SYSCALL_RET_OFF_T 3 |
72 | #define _SYSCALL_RET_ADDR_T 4 |
73 | #define _SYSCALL_RET_SIZE_T 5 |
74 | #define _SYSCALL_RET_SSIZE_T 6 |
75 | #define _SYSCALL_RET_UINT64_T 7 |
76 | |
77 | #endif /* __APPLE_API_PRIVATE */ |
78 | #endif /* KERNEL_PRIVATE */ |
79 | |
80 | #endif /* !_SYS_SYSENT_H_ */ |
81 | |