Hi folks, I would like to know if somebody can comment on the following regarding labeled NFS. RFC 7569 talks about Label formats and specifically lists that "0" is a reserved value. Using labeled NFS with SElinux and looking at labels (in wireshark), the selinux sends sends/sets label format as 0 (ie. this is a reserved value according to the spec) So we have labelformat_spec4 set to 0 where the spec says this field "The LFS and the Security Label Format Selection Registry are described in detail in [RFC7569]". It's unlikely that "0" reserved for Selinux and not explicitly specified there? 0 seems to be a good choice for using as a default label which the RFC7862 vaguely talks about (though says nothing about the format for a default label). I'm not aware if Selinux is supposed to follow a spec and therefore I don't think it is obligated to follow the rules of RFC 7569. Anybody can comment how labeled NFS label format and SElinux label format choice are supposed to co-exist? Thank you.
