NetBSD/share/man/man9/store.9

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.\" $NetBSD: store.9,v 1.6 1998/04/22 07:14:33 ross Exp $
.\"
.\" Copyright (c) 1996 Jason R. Thorpe.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed by Kenneth Stailey.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
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.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed for the NetBSD Project
.\" by Jason R. Thorpe.
.\" 4. The name of the author may not be used to endorse or promote products
.\" derived from this software without specific prior written permission.
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.Dd January 7, 1996
.Dt STORE 9
.Os NetBSD
.Sh NAME
.Nm store ,
.Nm subyte ,
.Nm suibyte ,
.Nm susword ,
.Nm suswintr ,
.Nm suword ,
.Nm suiword
.Nd store data to user-space
.Sh SYNOPSIS
.Fd #include <sys/types.h>
.Fd #include <sys/systm.h>
.Ft int
.Fn subyte "void *base" "int c"
.Ft int
.Fn susword "void *base" "short c"
.Ft int
.Fn suswintr "void *base" "short c"
.Ft int
.Fn suword "void *base" "long c"
.Sh DESCRIPTION
The
.Nm
functions are designed to copy small amounts of data to the user-space of the
currently running process.
.Pp
The
.Nm
routines provide the following functionality:
.Bl -tag -width "suswintr()"
.It Fn subyte
Stores a byte of data to the user-space address
.Fa base .
.It Fn susword
Stores a short word of data to the user-space address
.Fa base .
.It Fn suswintr
Stores a short word of data to the user-space address
.Fa base .
This function is safe to call during an interrupt context.
.It Fn suword
Stores a word of data to the user-space address
.Fa base .
.El
.Sh RETURN VALUES
The
.Nm
functions return 0 on success or -1 on failure.
.Sh SEE ALSO
.Xr copy 9 ,
.Xr fetch 9 .