1.\" 2.\" This file and its contents are supplied under the terms of the 3.\" Common Development and Distribution License ("CDDL"), version 1.0. 4.\" You may only use this file in accordance with the terms of version 5.\" 1.0 of the CDDL. 6.\" 7.\" A full copy of the text of the CDDL should have accompanied this 8.\" source. A copy of the CDDL is also available via the Internet at 9.\" http://www.illumos.org/license/CDDL. 10.\" 11.\" Copyright 2017 James S Blachly, MD <james.blachly@gmail.com> 12. 13.Dd "Feb 7, 2017" 14.Dt FULL 4D 15.Os 16.Sh NAME 17.Nm full 18.Nd always-full device 19.Sh SYNOPSIS 20.Pa /dev/full 21.Sh DESCRIPTION 22The 23.Nm 24device is used to test program behavior in out-of-space conditions. 25.Lp 26Writes always yield the error 27.Er ENOSPC. 28.Lp 29Reads supply an endless stream of zeros, identical to 30.Xr zero 4D 31.Lp 32.Xr lseek 2 33will always return successfully. 34.Lp 35.Xr mmap 2 36is not implemented. 37.Sh FILES 38. 39.Bl -tag -width Pa 40.It Pa /dev/full 41.El 42. 43.Sh SEE ALSO 44.Xr mem 4D , 45.Xr null 4D , 46.Xr zero 4D 47