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/sysref2.h>
  53 #include <sys/thread2.h>
  54
  55 #include <machine/limits.h>
  56
  57 int
  58 sys_aio_return(struct aio_return_args *uap)
  59 {
  60         return ENOSYS;
  61 }
  62
  63 int
  64 sys_aio_suspend(struct aio_suspend_args *uap)
  65 {
  66         return ENOSYS;
  67 }
  68
  69 int
  70 sys_aio_cancel(struct aio_cancel_args *uap)
  71 {
  72         return ENOSYS;
  73 }
  74
  75 int
  76 sys_aio_error(struct aio_error_args *uap)
  77 {
  78         return ENOSYS;
  79 }
  80
  81 int
  82 sys_aio_read(struct aio_read_args *uap)
  83 {
  84         return ENOSYS;
  85 }
  86
  87 int
  88 sys_aio_write(struct aio_write_args *uap)
  89 {
  90         return ENOSYS;
  91 }
  92
  93 int
  94 sys_lio_listio(struct lio_listio_args *uap)
  95 {
  96         return ENOSYS;
  97 }
  98
  99 int
 100 sys_aio_waitcomplete(struct aio_waitcomplete_args *uap)
 101 {
 102         return ENOSYS;
 103 }
 104
 105 static int
 106 filt_aioattach(struct knote *kn)
 107 {
 108         return ENXIO;
 109 }
 110
 111 struct filterops aio_filtops =
 112         { FILTEROP_MPSAFE, filt_aioattach, NULL, NULL };