// GetFSID returns the fsid of the cluster as a hexadecimal string. The fsid
// is a unique identifier of an entire Ceph cluster.
func (c *Conn) GetFSID() (fsid string, err error) {
buf := make([]byte, 37)
ret := int(C.rados_cluster_fsid(c.cluster,
(*C.char)(unsafe.Pointer(&buf[0])), C.size_t(len(buf))))
// FIXME: the success case isn't documented correctly in librados.h
if ret == 36 {
fsid = C.GoString((*C.char)(unsafe.Pointer(&buf[0])))
return fsid, nil
} else {
return "", RadosError(int(ret))
}
}
// FSID returns the FSID of the cluster.
func (cluster *Cluster) FSID() string {
bufLen := 37
for {
bufAddr := bufferAddress(bufLen)
ret := C.rados_cluster_fsid(cluster.handle, bufAddr, C.size_t(bufLen))
if int(ret) == -int(syscall.ERANGE) {
bufLen *= 2
continue
}
fsid := C.GoStringN(bufAddr, ret)
return fsid
}
}