fhopen2
Open a file by file handle
Usage
#include <sys/types.h>
#include <sys/mount.h>
int
fhopen(const struct fhandle *fhp, int flags);
Overview
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.
Releases
Unchanged in 112 releases since Mac OS X 10.5.