These functions provide a means to access a file given the opaque file handle
fhp and the size
fh_size of the opaque object as returned by
getfh(2). As this method bypasses directory access restrictions, these calls are restricted to the superuser.
fhopen() opens the file referenced by
fhp for reading and/or writing as specified by the argument
flags and returns the file descriptor to the calling process. The
flags are specified by
or'ing together the flags used for the
open(2) call. All said flags are valid except for
O_CREAT.
fhstat(),
fhstatvfs(), and
fhstatvfs1() provide the functionality of the
fstat(2),
fstatvfs(2), and
fstatvfs1(2) calls except that they return information for the file referred to by
fhp rather than an open file.