| mount_nullfs.8 (96707) | mount_nullfs.8 (99501) |
|---|---|
| 1.\" 2.\" Copyright (c) 1992, 1993, 1994 3.\" The Regents of the University of California. All rights reserved. 4.\" 5.\" This code is derived from software donated to Berkeley by 6.\" John Heidemann of the UCLA Ficus project. 7.\" 8.\" --- 21 unchanged lines hidden (view full) --- 30.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35.\" SUCH DAMAGE. 36.\" 37.\" @(#)mount_null.8 8.6 (Berkeley) 5/1/95 | 1.\" 2.\" Copyright (c) 1992, 1993, 1994 3.\" The Regents of the University of California. All rights reserved. 4.\" 5.\" This code is derived from software donated to Berkeley by 6.\" John Heidemann of the UCLA Ficus project. 7.\" 8.\" --- 21 unchanged lines hidden (view full) --- 30.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35.\" SUCH DAMAGE. 36.\" 37.\" @(#)mount_null.8 8.6 (Berkeley) 5/1/95 |
| 38.\" $FreeBSD: head/sbin/mount_nullfs/mount_nullfs.8 96707 2002-05-16 04:10:46Z trhodes $ | 38.\" $FreeBSD: head/sbin/mount_nullfs/mount_nullfs.8 99501 2002-07-06 19:34:18Z charnier $ |
| 39.\" 40.Dd May 1, 1995 41.Dt MOUNT_NULLFS 8 42.Os 43.Sh NAME 44.Nm mount_nullfs 45.Nd "mount a loopback filesystem sub-tree; demonstrate the use of a null filesystem layer" 46.Sh SYNOPSIS 47.Nm 48.Op Fl o Ar options 49.Ar target 50.Ar mount-point 51.Sh DESCRIPTION 52The 53.Nm | 39.\" 40.Dd May 1, 1995 41.Dt MOUNT_NULLFS 8 42.Os 43.Sh NAME 44.Nm mount_nullfs 45.Nd "mount a loopback filesystem sub-tree; demonstrate the use of a null filesystem layer" 46.Sh SYNOPSIS 47.Nm 48.Op Fl o Ar options 49.Ar target 50.Ar mount-point 51.Sh DESCRIPTION 52The 53.Nm |
| 54command creates a | 54utility creates a |
| 55null layer, duplicating a sub-tree of the filesystem 56name space under another part of the global filesystem namespace. 57This allows existing files and directories to be accessed 58using a different pathname. 59.Pp 60The primary differences between a virtual copy of the filesystem 61and a symbolic link are that the 62.Xr getcwd 3 --- 35 unchanged lines hidden (view full) --- 98.Pp 99The remainder of this man page examines the null layer as a basis 100for constructing new layers. 101.\" 102.\" 103.Sh INSTANTIATING NEW NULL LAYERS 104New null layers are created with 105.Nm . | 55null layer, duplicating a sub-tree of the filesystem 56name space under another part of the global filesystem namespace. 57This allows existing files and directories to be accessed 58using a different pathname. 59.Pp 60The primary differences between a virtual copy of the filesystem 61and a symbolic link are that the 62.Xr getcwd 3 --- 35 unchanged lines hidden (view full) --- 98.Pp 99The remainder of this man page examines the null layer as a basis 100for constructing new layers. 101.\" 102.\" 103.Sh INSTANTIATING NEW NULL LAYERS 104New null layers are created with 105.Nm . |
| 106.Nm Mount_nullfs 107takes two arguments, the pathname | 106The 107.Nm 108utility takes two arguments, the pathname |
| 108of the lower vfs (target-pn) and the pathname where the null 109layer will appear in the namespace (mount-point-pn). After 110the null layer is put into place, the contents 111of target-pn subtree will be aliased under mount-point-pn. 112.\" 113.\" 114.Sh OPERATION OF A NULL LAYER 115The null layer is the minimum filesystem layer, --- 130 unchanged lines hidden --- | 109of the lower vfs (target-pn) and the pathname where the null 110layer will appear in the namespace (mount-point-pn). After 111the null layer is put into place, the contents 112of target-pn subtree will be aliased under mount-point-pn. 113.\" 114.\" 115.Sh OPERATION OF A NULL LAYER 116The null layer is the minimum filesystem layer, --- 130 unchanged lines hidden --- |