.\"
.\" This file and its contents are supplied under the terms of the
.\" Common Development and Distribution License ("CDDL"), version 1.0.
.\" You may only use this file in accordance with the terms of version
.\" 1.0 of the CDDL.
.\"
.\" A full copy of the text of the CDDL should have accompanied this
.\" source.  A copy of the CDDL is also available via the Internet at
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.\" Copyright 2017 James S Blachly, MD <james.blachly@gmail.com>
.
.Dd "Feb 7, 2017"
.Dt FULL 4D
.Os
.Sh NAME
.Nm full
.Nd always-full device
.Sh SYNOPSIS
.Pa /dev/full
.Sh DESCRIPTION
The
.Nm
device is used to test program behavior in out-of-space conditions.
.Lp
Writes always yield the error
.Er ENOSPC.
.Lp
Reads supply an endless stream of zeros, identical to
.Xr zero 4D
.Lp
.Xr lseek 2
will always return successfully.
.Lp
.Xr mmap 2
is not implemented.
.Sh FILES
.
.Bl -tag -width Pa
.It Pa /dev/full
.El
.
.Sh SEE ALSO
.Xr mem 4D ,
.Xr null 4D ,
.Xr zero 4D