1.\" Copyright (c) 1996 2.\" Mike Pritchard <mpp@FreeBSD.org>. All rights reserved. 3.\" 4.\" Copyright (c) 1992, 1993, 1994 5.\" The Regents of the University of California. All rights reserved. 6.\" All rights reserved. 7.\" 8.\" This code is derived from software donated to Berkeley by 9.\" Jan-Simon Pendry. 10.\" 11.\" Redistribution and use in source and binary forms, with or without 12.\" modification, are permitted provided that the following conditions 13.\" are met: 14.\" 1. Redistributions of source code must retain the above copyright 15.\" notice, this list of conditions and the following disclaimer. 16.\" 2. Redistributions in binary form must reproduce the above copyright 17.\" notice, this list of conditions and the following disclaimer in the 18.\" documentation and/or other materials provided with the distribution. 19.\" 3. All advertising materials mentioning features or use of this software 20.\" must display the following acknowledgement: 21.\" This product includes software developed by the University of 22.\" California, Berkeley and its contributors. 23.\" 4. Neither the name of the University nor the names of its contributors 24.\" may be used to endorse or promote products derived from this software 25.\" without specific prior written permission. 26.\" 27.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37.\" SUCH DAMAGE. 38.\" 39.\" $FreeBSD: src/share/man/man5/devfs.5,v 1.19 2006/09/18 15:24:19 ru Exp $ 40.\" 41.Dd September 12, 2009 42.Dt DEVFS 5 43.Os 44.Sh NAME 45.Nm devfs 46.Nd device file system 47.\".Sh SYNOPSIS 48.\".Bd -literal 49.\"devfs /dev devfs rw 0 0 50.\".Ed 51.Sh DESCRIPTION 52The device file system, or 53.Nm , 54provides access to kernel's device 55namespace in the global file system namespace. 56It is mounted automatically on 57.Pa /dev . 58.Pp 59The file system includes several directories, links, symbolic links 60and devices, some of which can also be written. 61In a chroot'ed 62environment, 63.Nm 64can be used to create a new 65.Pa /dev 66mount point. 67.Sh FILES 68.Bl -tag -width /dev/XXXX -compact 69.It Pa /dev 70The normal 71.Nm 72mount point. 73.El 74.\".Sh EXAMPLES 75.\"To mount a 76.\".Nm 77.\"volume located on 78.\".Pa /dev : 79.\".Pp 80.\".Dl "mount -t devfs devfs /dev" 81.Sh SEE ALSO 82.Xr devfsctl 8 83.\".Xr mount 8 84.Sh HISTORY 85The 86.Nm 87file system first appeared in 88.Dx 2.3 . 89.Sh AUTHORS 90.An Alex Hornung 91