Missing cephfs API components: function ceph_futimens

[phlogistonjohn]

The cephfs API implements function(s) below but go-ceph does not:

• ceph_futimens

This issue has been filed to track implementing this missing functionality in the appropriate package within go-ceph. Please refer to the Ceph C API for details about the function(s) in question.

NOTE: This issue was generated by a script. If the content is innacurate or wording seems a bit odd please excuse the script and blame the creator @phlogistonjohn