.\" .\" Copyright (c) 2007 Apple Inc. All rights reserved. .\" .\" @APPLE_LICENSE_HEADER_START@ .\" .\" This file contains Original Code and/or Modifications of Original Code .\" as defined in and that are subject to the Apple Public Source License .\" Version 2.0 (the 'License'). You may not use this file except in .\" compliance with the License. Please obtain a copy of the License at .\" http://www.opensource.apple.com/apsl/ and read it before using this .\" file. .\" .\" The Original Code and all software distributed under the License are .\" distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER .\" EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, .\" INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, .\" FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. .\" Please see the License for the specific language governing rights and .\" limitations under the License. .\" .\" @APPLE_LICENSE_HEADER_END@ .\" .Dd January 9, 2007 .Dt FHOPEN 2 .Os .Sh NAME .Nm fhopen .Nd open a file by file handle .Sh SYNOPSIS .Fd #include <sys/types.h> .Fd #include <sys/mount.h> .Ft int .Fn fhopen "const struct fhandle *fhp" "int flags" .Sh DESCRIPTION The file specified by the given file handle is opened for reading and/or writing, as specified by the argument .Fa flags ; the file descriptor is returned to the calling process. .Pp This system call is restricted to the super-user and is used by an NFS server's .Xr rpc.lockd 8 daemon to open a file in order to perform locking operations on it. .Sh RETURN VALUES Upon successful completion, a value of 0 is returned. Otherwise, -1 is returned and the global variable .Va errno is set to indicate the error. .Sh ERRORS .Fn fhopen fails if one or more of the following are true: .Bl -tag -width Er .It Bq ESTALE The file handle no longer refers to a valid, NFS-exported object. .It Bq EPERM The caller is not the super-user. .It Bq EINVAL There was a problem with the value of one of the arguments. .It Bq EFAULT .Fa fhp points to an invalid address. .El .Sh SEE ALSO .Xr rpc.lockd 8