xref: /dragonfly/sys/kern/vfs_aio.c (revision 029e6489) 
1 /*
2  * Copyright (c) 1997 John S. Dyson.  All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. John S. Dyson's name may not be used to endorse or promote products
10  *    derived from this software without specific prior written permission.
11  *
12  * DISCLAIMER:  This code isn't warranted to do anything useful.  Anything
13  * bad that happens because of using this software isn't the responsibility
14  * of the author.  This software is distributed AS-IS.
15  *
16  * $FreeBSD: src/sys/kern/vfs_aio.c,v 1.70.2.28 2003/05/29 06:15:35 alc Exp $
17  */
18 
19 /*
20  * This file contains stubs for the POSIX 1003.1B AIO/LIO facility.
21  */
22 
23 #include <sys/param.h>
24 #include <sys/sysmsg.h>
25 #include <sys/event.h>
26 
27 int
28 sys_aio_return(struct sysmsg *sysmsg, const struct aio_return_args *uap)
29 {
30 	return ENOSYS;
31 }
32 
33 int
34 sys_aio_suspend(struct sysmsg *sysmsg, const struct aio_suspend_args *uap)
35 {
36 	return ENOSYS;
37 }
38 
39 int
40 sys_aio_cancel(struct sysmsg *sysmsg, const struct aio_cancel_args *uap)
41 {
42 	return ENOSYS;
43 }
44 
45 int
46 sys_aio_error(struct sysmsg *sysmsg, const struct aio_error_args *uap)
47 {
48 	return ENOSYS;
49 }
50 
51 int
52 sys_aio_read(struct sysmsg *sysmsg, const struct aio_read_args *uap)
53 {
54 	return ENOSYS;
55 }
56 
57 int
58 sys_aio_write(struct sysmsg *sysmsg, const struct aio_write_args *uap)
59 {
60 	return ENOSYS;
61 }
62 
63 int
64 sys_lio_listio(struct sysmsg *sysmsg, const struct lio_listio_args *uap)
65 {
66 	return ENOSYS;
67 }
68 
69 int
70 sys_aio_waitcomplete(struct sysmsg *sysmsg, const struct aio_waitcomplete_args *uap)
71 {
72 	return ENOSYS;
73 }
74 
75 static int
76 filt_aioattach(struct knote *kn)
77 {
78 	return ENXIO;
79 }
80 
81 struct filterops aio_filtops =
82 	{ FILTEROP_MPSAFE, filt_aioattach, NULL, NULL };
83