154697Sbostic.\" 2*66472Sbostic.\" Copyright (c) 1992, 1993, 1994 362949Sbostic.\" The Regents of the University of California. All rights reserved. 454697Sbostic.\" All rights reserved. 554697Sbostic.\" 654697Sbostic.\" This code is derived from software donated to Berkeley by 754697Sbostic.\" Jan-Simon Pendry. 854697Sbostic.\" 954697Sbostic.\" %sccs.include.redist.roff% 1054697Sbostic.\" 11*66472Sbostic.\" @(#)mount_lofs.8 8.2 (Berkeley) 03/27/94 1254697Sbostic.\" 1354697Sbostic.\" 1454697Sbostic.Dd 1554697Sbostic.Dt MOUNT_LOFS 8 1654697Sbostic.Os BSD 4.4 1754697Sbostic.Sh NAME 1854697Sbostic.Nm mount_lofs 1954697Sbostic.Nd mount a virtual copy of an existing filesystem sub-tree 2054697Sbostic.Sh SYNOPSIS 2154697Sbostic.Nm mount_lofs 22*66472Sbostic.Op Fl o Ar options 23*66472Sbostic.Ar target 24*66472Sbostic.Ar mount-point 2554697Sbostic.Sh DESCRIPTION 2654697SbosticThe 2754697Sbostic.Nm mount_lofs 2854697Sbosticcommand makes a sub-tree of an existing filesystem visible 2954697Sbosticin another part of the global filesystem namespace. 3054697SbosticThis allows existing files and directories to be accessed 3154697Sbosticusing a different pathname. 3254697Sbostic.Pp 3354697SbosticThe primary differences between a virtual copy of the filesystem 3454697Sbosticand a symbolic link are that 3554697Sbostic.Xr getcwd 3 3654697Sbosticfunctions correctly in the virtual copy, and that other filesystems 3754697Sbosticmay be mounted on the virtual copy without affecting the original. 3854697SbosticA different device number for the virtual copy is returned by 3954697Sbostic.Xr stat 2 , 4054697Sbosticbut in other respects it is indistinguishable from the original. 41*66472Sbostic.Pp 42*66472SbosticThe options are as follows: 43*66472Sbostic.Bl -tag -width indent 44*66472Sbostic.It Fl o 45*66472SbosticOptions are specified with a 46*66472Sbostic.Fl o 47*66472Sbosticflag followed by a comma separated string of options. 48*66472SbosticSee the 49*66472Sbostic.Xr mount 8 50*66472Sbosticman page for possible options and their meanings. 51*66472Sbostic.Sh SEE ALSO 52*66472Sbostic.Xr mount 8 5354697Sbostic.Sh HISTORY 5454697SbosticThe 5562948Sbostic.Nm mount_lofs 5662948Sbosticutility first appeared in 4.4BSD. 57