92 lines
2.9 KiB
Groff
92 lines
2.9 KiB
Groff
.\" -*- nroff -*-
|
|
.\"
|
|
.\" Copyright (c) 1996 Doug Rabson
|
|
.\"
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This program is free software.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
|
|
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
.\" IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd July 24, 1996
|
|
.Os
|
|
.Dt VFS_MOUNT 9
|
|
.Sh NAME
|
|
.Nm VFS_MOUNT
|
|
.Nd mount a file system
|
|
.Sh SYNOPSIS
|
|
.In sys/param.h
|
|
.In sys/mount.h
|
|
.In sys/vnode.h
|
|
.Ft int
|
|
.Fn VFS_MOUNT "struct mount *mp" "char *path" "caddr_t data" "struct nameidata *ndp" "struct thread *td"
|
|
.Sh DESCRIPTION
|
|
Mount a file system into the system's namespace.
|
|
.Pp
|
|
Its arguments are:
|
|
.Bl -tag -width data
|
|
.It Fa mp
|
|
Structure representing the file system.
|
|
.It Fa path
|
|
Pathname where the file system is being mounted.
|
|
.It Fa data
|
|
File system specific data.
|
|
This should be read into the kernel using
|
|
.Xr copyin 9 .
|
|
.It Fa ndp
|
|
Contains the result of a
|
|
.Xr namei 9
|
|
call on the pathname of the mountpoint.
|
|
.It Fa td
|
|
Thread which is mounting the file system.
|
|
.El
|
|
.Pp
|
|
This is called both to mount new file systems and to change the
|
|
attributes of an existing file system.
|
|
If the
|
|
.Dv MNT_UPDATE
|
|
flag is set in
|
|
.Fa mp->mnt_flag
|
|
then the file system should update its internal state from the value of
|
|
.Fa mp->mnt_flag .
|
|
This can be used, for instance, to convert a read-only file system to
|
|
read-write.
|
|
It is also used by
|
|
.Xr mountd 8
|
|
to update the NFS export information for the file system.
|
|
.Pp
|
|
If the
|
|
.Dv MNT_UPDATE
|
|
flag is not specified, then this is a newly mounted file system.
|
|
The file system code should allocate and initialize
|
|
any private data needed to represent
|
|
the file system (it can use the
|
|
.Fa mp->mnt_data
|
|
field to store this information).
|
|
.Sh SEE ALSO
|
|
.Xr VFS 9 ,
|
|
.Xr vnode 9
|
|
.Sh AUTHORS
|
|
This manual page was written by
|
|
.An Doug Rabson .
|