macro is used by the NFS server to turn an NFS filehandle into a vnode.
The arguments it expects are:
The file system.
The filehandle to convert.
Return parameter for the new locked vnode.
The contents of the filehandle are defined by the file system and are
not examined by any other part of the system.
It should contain
enough information to uniquely identify a file within the file system
as well as noticing when a file has been removed and the file system
resources have been reused for a new file.
For instance, UFS
file system stores the inode number and inode generation counter in its
A call to
should generally be preceded by a call to
to check if the file is accessible to the client.