xref: /xnu-12377.81.4/bsd/sys/sysent.h (revision 043036a2b3718f7f0be807e2870f8f47d3fa0796)
1*043036a2SApple OSS Distributions /*
2*043036a2SApple OSS Distributions  * Copyright (c) 2004-2014 Apple Inc. All rights reserved.
3*043036a2SApple OSS Distributions  *
4*043036a2SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*043036a2SApple OSS Distributions  *
6*043036a2SApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*043036a2SApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*043036a2SApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*043036a2SApple OSS Distributions  * compliance with the License. The rights granted to you under the License
10*043036a2SApple OSS Distributions  * may not be used to create, or enable the creation or redistribution of,
11*043036a2SApple OSS Distributions  * unlawful or unlicensed copies of an Apple operating system, or to
12*043036a2SApple OSS Distributions  * circumvent, violate, or enable the circumvention or violation of, any
13*043036a2SApple OSS Distributions  * terms of an Apple operating system software license agreement.
14*043036a2SApple OSS Distributions  *
15*043036a2SApple OSS Distributions  * Please obtain a copy of the License at
16*043036a2SApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*043036a2SApple OSS Distributions  *
18*043036a2SApple OSS Distributions  * The Original Code and all software distributed under the License are
19*043036a2SApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*043036a2SApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*043036a2SApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*043036a2SApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*043036a2SApple OSS Distributions  * Please see the License for the specific language governing rights and
24*043036a2SApple OSS Distributions  * limitations under the License.
25*043036a2SApple OSS Distributions  *
26*043036a2SApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*043036a2SApple OSS Distributions  */
28*043036a2SApple OSS Distributions 
29*043036a2SApple OSS Distributions #ifndef _SYS_SYSENT_H_
30*043036a2SApple OSS Distributions #define _SYS_SYSENT_H_
31*043036a2SApple OSS Distributions 
32*043036a2SApple OSS Distributions #include <sys/appleapiopts.h>
33*043036a2SApple OSS Distributions #include <sys/cdefs.h>
34*043036a2SApple OSS Distributions 
35*043036a2SApple OSS Distributions #ifdef KERNEL_PRIVATE
36*043036a2SApple OSS Distributions #ifdef __APPLE_API_PRIVATE
37*043036a2SApple OSS Distributions 
38*043036a2SApple OSS Distributions typedef int32_t sy_call_t(struct proc *, void *, int *);
39*043036a2SApple OSS Distributions #if CONFIG_REQUIRES_U32_MUNGING
40*043036a2SApple OSS Distributions typedef void    sy_munge_t(void *);
41*043036a2SApple OSS Distributions #endif
42*043036a2SApple OSS Distributions 
43*043036a2SApple OSS Distributions struct sysent {         /* system call table */
44*043036a2SApple OSS Distributions 	sy_call_t       *sy_call;       /* implementing function */
45*043036a2SApple OSS Distributions #if CONFIG_REQUIRES_U32_MUNGING
46*043036a2SApple OSS Distributions 	sy_munge_t      *sy_arg_munge32; /* system call arguments munger for 32-bit process */
47*043036a2SApple OSS Distributions #endif
48*043036a2SApple OSS Distributions 	int32_t         sy_return_type; /* system call return types */
49*043036a2SApple OSS Distributions 	int16_t         sy_narg;        /* number of args */
50*043036a2SApple OSS Distributions 	uint16_t        sy_arg_bytes;   /* Total size of arguments in bytes for
51*043036a2SApple OSS Distributions 	                                 * 32-bit system calls
52*043036a2SApple OSS Distributions 	                                 */
53*043036a2SApple OSS Distributions };
54*043036a2SApple OSS Distributions 
55*043036a2SApple OSS Distributions extern const struct sysent sysent[];
56*043036a2SApple OSS Distributions extern const unsigned int nsysent;
57*043036a2SApple OSS Distributions 
58*043036a2SApple OSS Distributions /*
59*043036a2SApple OSS Distributions  * Valid values for sy_cancel
60*043036a2SApple OSS Distributions  */
61*043036a2SApple OSS Distributions #define _SYSCALL_CANCEL_NONE    0               /* Not a cancellation point */
62*043036a2SApple OSS Distributions #define _SYSCALL_CANCEL_PRE             1               /* Canbe cancelled on entry itself */
63*043036a2SApple OSS Distributions #define _SYSCALL_CANCEL_POST    2               /* Can only be cancelled after syscall is run */
64*043036a2SApple OSS Distributions 
65*043036a2SApple OSS Distributions /*
66*043036a2SApple OSS Distributions  * Valid values for sy_return_type
67*043036a2SApple OSS Distributions  */
68*043036a2SApple OSS Distributions #define _SYSCALL_RET_NONE               0
69*043036a2SApple OSS Distributions #define _SYSCALL_RET_INT_T              1
70*043036a2SApple OSS Distributions #define _SYSCALL_RET_UINT_T             2
71*043036a2SApple OSS Distributions #define _SYSCALL_RET_OFF_T              3
72*043036a2SApple OSS Distributions #define _SYSCALL_RET_ADDR_T             4
73*043036a2SApple OSS Distributions #define _SYSCALL_RET_SIZE_T             5
74*043036a2SApple OSS Distributions #define _SYSCALL_RET_SSIZE_T    6
75*043036a2SApple OSS Distributions #define _SYSCALL_RET_UINT64_T   7
76*043036a2SApple OSS Distributions 
77*043036a2SApple OSS Distributions #endif /* __APPLE_API_PRIVATE */
78*043036a2SApple OSS Distributions #endif /* KERNEL_PRIVATE */
79*043036a2SApple OSS Distributions 
80*043036a2SApple OSS Distributions #endif /* !_SYS_SYSENT_H_ */
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