mirror of
https://github.com/freebsd/freebsd-src
synced 2024-09-29 05:04:50 +00:00
fb6d83aa60
VFS_CHECKEXP.9, now used to check export credentials
VFS_FHTOVP.9, only used for filehandle to vnode, no access checks are done.
VFS.9, inform people of the vfs_std* functions available to avoid
ugly casts to eopnotsup and making of dummy functions to return 0.
95 lines
3 KiB
Groff
95 lines
3 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.
|
|
.\"
|
|
.\" $Id: VFS_FHTOVP.9,v 1.4 1998/08/03 17:29:44 bde Exp $
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd July 24, 1996
|
|
.Os
|
|
.Dt VFS_CHECKEXP 9
|
|
.Sh NAME
|
|
.Nm VFS_CHECKEXP
|
|
.Nd check if vnode is exported to a client
|
|
.Sh SYNOPSIS
|
|
.Fd #include <sys/param.h>
|
|
.Fd #include <sys/mount.h>
|
|
.Fd #include <sys/vnode.h>
|
|
.Ft int
|
|
.Fn VFS_CHECKEXP "struct mount *mp" "struct mbuf *nam" "int *exflagsp" "struct ucred **credanonp"
|
|
.Sh DESCRIPTION
|
|
This is used by the NFS server to check if a vnode is exported to a client.
|
|
.Pp
|
|
Its arguments are:
|
|
.Bl -tag -width credanonp
|
|
.It Ar mp
|
|
The mount point to be checked.
|
|
.It Ar nam
|
|
An mbuf containing the network address of the client.
|
|
.It Ar exflagsp
|
|
Return parameter for the export flags for this client.
|
|
.It Ar credanonp
|
|
Return parameter for the anonymous credentials for this client.
|
|
.El
|
|
.Pp
|
|
This should be called on a file system's mount structure to determine if it
|
|
is exported to a client whos address is contained in
|
|
.Fa nam .
|
|
.Pp
|
|
It is generally called before
|
|
.Xr VFS_FHTOVP 9
|
|
to validate that a client has access to the filesystem.
|
|
.Pp
|
|
The filesystem should call
|
|
.Xr vfs_export_lookup 9
|
|
with the address of an appropriate
|
|
.Dv netexport
|
|
structure and the address of the client,
|
|
.Fa nam ,
|
|
to verify that the client can access this filesystem.
|
|
.Pp
|
|
.Sh RETURN VALUES
|
|
The export flags and anonymous credentials specific to the client
|
|
will be returned in
|
|
.Fa *exflagsp
|
|
and
|
|
.Fa *credanonp .
|
|
.Sh SEE ALSO
|
|
.Xr VFS 9 ,
|
|
.Xr VFS_FHTOVP 9 ,
|
|
.Xr VFS_VPTOFH 9 ,
|
|
.Xr vnode 9
|
|
.Sh AUTHORS
|
|
This man page was written by
|
|
.An Doug Rabson ,
|
|
for
|
|
.Xr VFS_FHTOVP 9
|
|
and modified for
|
|
.Xr VFS_CHECKEXP 9
|
|
by
|
|
.An Alfred Perlstein .
|