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...
NAMEVFS_FHTOVP - turn an NFS filehandle into a vnode
SYNOPSISIn sys/param.h In sys/mount.h In sys/vnode.h Ft int Fn VFS_FHTOVP struct mount *mp struct fid *fhp struct vnode **vpp
DESCRIPTIONThe Fn VFS_FHTOVP macro is used by the NFS server to turn an NFS filehandle into a vnode.
The arguments it expects are:
- Fa mp
- The file system.
- Fa fhp
- The filehandle to convert.
- Fa vpp
- 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 filehandle.
A call to Fn VFS_FHTOVP should generally be preceded by a call to VFS_CHECKEXP9 to check if the file is accessible to the client.