sys/kern/vfs_aio.c

   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/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>
  43
  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>
  49
  50 #include <sys/file2.h>
  51 #include <sys/buf2.h>
  52 #include <sys/thread2.h>
  53
  54 #include <machine/limits.h>
  55
  56 int
  57 sys_aio_return(struct aio_return_args *uap)
  58 {
  59         return ENOSYS;
  60 }
  61
  62 int
  63 sys_aio_suspend(struct aio_suspend_args *uap)
  64 {
  65         return ENOSYS;
  66 }
  67
  68 int
  69 sys_aio_cancel(struct aio_cancel_args *uap)
  70 {
  71         return ENOSYS;
  72 }
  73
  74 int
  75 sys_aio_error(struct aio_error_args *uap)
  76 {
  77         return ENOSYS;
  78 }
  79
  80 int
  81 sys_aio_read(struct aio_read_args *uap)
  82 {
  83         return ENOSYS;
  84 }
  85
  86 int
  87 sys_aio_write(struct aio_write_args *uap)
  88 {
  89         return ENOSYS;
  90 }
  91
  92 int
  93 sys_lio_listio(struct lio_listio_args *uap)
  94 {
  95         return ENOSYS;
  96 }
  97
  98 int
  99 sys_aio_waitcomplete(struct aio_waitcomplete_args *uap)
 100 {
 101         return ENOSYS;
 102 }
 103
 104 static int
 105 filt_aioattach(struct knote *kn)
 106 {
 107         return ENXIO;
 108 }
 109
 110 struct filterops aio_filtops =
 111         { FILTEROP_MPSAFE, filt_aioattach, NULL, NULL };