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/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 };