kernel - Revert part of the contig allocation work
[dragonfly.git] / sys / kern / vfs_aio.c
blobab40cdd70ca3486a052e17f00ac8237dfd38273c
1 /*
2 * Copyright (c) 1997 John S. Dyson. All rights reserved.
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.
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.
16 * $FreeBSD: src/sys/kern/vfs_aio.c,v 1.70.2.28 2003/05/29 06:15:35 alc Exp $
20 * This file contains stubs for the POSIX 1003.1B AIO/LIO facility.
23 #include <sys/param.h>
24 #include <sys/systm.h>
25 #include <sys/buf.h>
26 #include <sys/sysproto.h>
27 #include <sys/filedesc.h>
28 #include <sys/kernel.h>
29 #include <sys/fcntl.h>
30 #include <sys/file.h>
31 #include <sys/lock.h>
32 #include <sys/unistd.h>
33 #include <sys/proc.h>
34 #include <sys/resourcevar.h>
35 #include <sys/signalvar.h>
36 #include <sys/protosw.h>
37 #include <sys/socketvar.h>
38 #include <sys/sysctl.h>
39 #include <sys/vnode.h>
40 #include <sys/conf.h>
41 #include <sys/event.h>
42 #include <sys/objcache.h>
44 #include <vm/vm.h>
45 #include <vm/vm_extern.h>
46 #include <vm/pmap.h>
47 #include <vm/vm_map.h>
48 #include <sys/aio.h>
50 #include <sys/file2.h>
51 #include <sys/buf2.h>
52 #include <sys/thread2.h>
54 #include <machine/limits.h>
56 int
57 sys_aio_return(struct aio_return_args *uap)
59 return ENOSYS;
62 int
63 sys_aio_suspend(struct aio_suspend_args *uap)
65 return ENOSYS;
68 int
69 sys_aio_cancel(struct aio_cancel_args *uap)
71 return ENOSYS;
74 int
75 sys_aio_error(struct aio_error_args *uap)
77 return ENOSYS;
80 int
81 sys_aio_read(struct aio_read_args *uap)
83 return ENOSYS;
86 int
87 sys_aio_write(struct aio_write_args *uap)
89 return ENOSYS;
92 int
93 sys_lio_listio(struct lio_listio_args *uap)
95 return ENOSYS;
98 int
99 sys_aio_waitcomplete(struct aio_waitcomplete_args *uap)
101 return ENOSYS;
104 static int
105 filt_aioattach(struct knote *kn)
107 return ENXIO;
110 struct filterops aio_filtops =
111 { FILTEROP_MPSAFE, filt_aioattach, NULL, NULL };