FHOPEN(2)

NAME
fhopen - open a file by file handle

SYNOPSIS
#include <sys/types.h>
#include <sys/mount.h>
int
fhopen(const struct fhandle *fhp, int flags);

DESCRIPTION
The file specified by the given file handle is opened for reading and/or writing, as specified by the argument flags; the file descriptor is returned to the calling process.

This system call is restricted to the super-user and is used by an NFS server's rpc.lockd(8) daemon to open a file in order to perform locking operations on it.

RETURN VALUES
Upon successful completion, a value of 0 is returned. Otherwise, -1 is returned and the global variable errno is set to indicate the error.

ERRORS
fhopen() fails if one or more of the following are true:

[ESTALE]
    The file handle no longer refers to a valid, NFS-exported object.

[EPERM]
    The caller is not the super-user.

[EINVAL]
    There was a problem with the value of one of the arguments.

[EFAULT]
    fhp points to an invalid address.

SEE ALSO
rpc.lockd(8)