Copyright (c) 1996 Doug Rabson
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$Id: VFS_FHTOVP.9,v 1.4 1998/08/03 17:29:44 bde Exp $
$FreeBSD: head/share/man/man9/VFS_CHECKEXP.9 51140 1999-09-11 00:57:20Z alfred $
.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.
p Its arguments are: l -tag -width credanonp t Ar mp The mount point to be checked. t Ar nam An mbuf containing the network address of the client. t Ar exflagsp Return parameter for the export flags for this client. t Ar credanonp Return parameter for the anonymous credentials for this client. .El
p 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 .
p It is generally called before .Xr VFS_FHTOVP 9 to validate that a client has access to the filesystem.
p 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.
p .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 .