VFS_CHECKEXP(9)

NAME
VFS_CHECKEXP - check if vnode is exported to a client

SYNOPSIS
#include <sys/param.h>
#include <sys/mount.h>
int
VFS_CHECKEXP(struct mount *mp, struct mbuf *nam, int *exflagsp, struct ucred **credanonp);

DESCRIPTION
This is used by the NFS server to check if a mount point is exported to a client.

Its arguments are:

mp  The mount point to be checked.

nam An mbuf containing the network address of the client.

exflagsp
    Return parameter for the export flags for this client.

credanonp
    Return parameter for the anonymous credentials for this client.

This should be called on a file system's mount structure to determine if it is exported to a client whose address is contained in nam.

It is generally called before VFS_FHTOVP(9) to validate that a client has access to the filesystem.

The filesystem should call vfs_export_lookup() with the address of an appropriate netexport structure and the address of the client, nam, to verify that the client can access this filesystem.

RETURN VALUES
The export flags and anonymous credentials specific to the client (returned by vfs_export_lookup()) will be returned in *exflagsp and *credanonp.

SEE ALSO
VFS(9), VFS_FHTOVP(9), VFS_VPTOFH(9), vnode(9)

AUTHORS
This man page was written by Alfred Perlstein.