bsd/man/man9/store.9

   1 .\"     $NetBSD: store.9,v 1.2 1996/01/09 21:59:27 perry Exp $
   2 .\"
   3 .\" Copyright (c) 1996 Jason R. Thorpe.
   4 .\" All rights reserved.
   5 .\"
   6 .\" This code is derived from software contributed by Kenneth Stailey.
   7 .\"
   8 .\" Redistribution and use in source and binary forms, with or without
   9 .\" modification, are permitted provided that the following conditions
  10 .\" are met:
  11 .\" 1. Redistributions of source code must retain the above copyright
  12 .\"    notice, this list of conditions and the following disclaimer.
  13 .\" 2. Redistributions in binary form must reproduce the above copyright
  14 .\"    notice, this list of conditions and the following disclaimer in the
  15 .\"    documentation and/or other materials provided with the distribution.
  16 .\" 3. All advertising materials mentioning features or use of this software
  17 .\"    must display the following acknowledgement:
  18 .\"     This product includes software developed for the NetBSD Project
  19 .\"     by Jason R. Thorpe.
  20 .\" 4. The name of the author may not be used to endorse or promote products
  21 .\"    derived from this software without specific prior written permission.
  22 .\"
  23 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  24 .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  25 .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26 .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  27 .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  28 .\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  29 .\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  30 .\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  31 .\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33 .\" SUCH DAMAGE.
  34 .\"
  35 .\" $FreeBSD: src/share/man/man9/store.9,v 1.7.2.4 2001/12/17 11:30:19 ru Exp $
  36 .\"
  37 .Dd January 7, 1996
  38 .Dt STORE 9
  39 .Os
  40 .Sh NAME
  41 .Nm store ,
  42 .Nm subyte ,
  43 .Nm susword ,
  44 .Nm suswintr ,
  45 .Nm suword
  46 .Nd store data to user-space
  47 .Sh SYNOPSIS
  48 .In sys/types.h
  49 .In sys/time.h
  50 .In sys/systm.h
  51 .In sys/resourcevar.h
  52 .Ft int
  53 .Fn subyte "void *base" "int byte"
  54 .Ft int
  55 .Fn susword "void *base" "int word"
  56 .Ft int
  57 .Fn suswintr "void *base" "int word"
  58 .Ft int
  59 .Fn suword "void *base" "long word"
  60 .Sh DESCRIPTION
  61 The
  62 .Nm
  63 functions are designed to copy small amounts of data to user-space.
  64 .Pp
  65 The
  66 .Nm
  67 routines provide the following functionality:
  68 .Bl -tag -width "suswintr()"
  69 .It Fn subyte
  70 Stores a byte of data to the user-space address
  71 .Pa base .
  72 .It Fn susword
  73 Stores a short word of data to the user-space address
  74 .Pa base .
  75 .It Fn suswintr
  76 Stores a short word of data to the user-space address
  77 .Pa base .
  78 This function is safe to call during an interrupt context.
  79 .It Fn suword
  80 Stores a word of data to the user-space address
  81 .Pa base .
  82 .El
  83 .Sh RETURN VALUES
  84 The
  85 .Nm
  86 functions return 0 on success or -1 on failure.
  87 .Sh SEE ALSO
  88 .Xr copy 9 ,
  89 .Xr fetch 9