The
VFS_FHTOVP()
macro is used by the NFS server to turn an NFS filehandle into a vnode.
The arguments it expects are:
|
| mp
|
| |
The file system.
|
| fhp
|
| |
The filehandle to convert.
|
| flags
|
| |
Additional locking flags to pass through to
vget(9).
File systems are allowed to ignore
flags
and use
LK_EXCLUSIVE
instead.
|
| 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
VFS_FHTOVP()
should generally be preceded by a call to
VFS_CHECKEXP(9)
to check if the file is accessible to the client.
