Support storing UnixFS Owner

[yuzhou-nj]

Checklist

• My issue is specific & actionable.
• I am not suggesting a protocol enhancement.
• I have searched on the issue tracker for my issue.

Description

The ipfs add command supports --preserve-mode and --preserve-mtime. Is it possible to also support --preserve-owner? This would allow changes made by chown to be preserved when adding files with ipfs add.

for example:

# ipfs add --preserve-mode --preserve-mtime test.json
added QmbwaAtVk282BkCwK18FDXniC26sTmZqSJvwRAVPAm3fV8 test.json

# chown oracle test.json
# ipfs add --preserve-mode --preserve-mtime test.json
added QmbwaAtVk282BkCwK18FDXniC26sTmZqSJvwRAVPAm3fV8 test.json  <--not changed

thank you!

[lidel]

No, owner is not part of Unixfs 1.5 (only mode and mtime), so it is not possible atm.

If you want to preserve owner information, wrap your data in a TAR, and store that.

Adding support for it would require IPIP spec proposal in https://github.com/ipfs/specs/ and requires ipfs/specs#331 to land first.

I'm closing this, because there is no spec for Kubo to implement, but if you would like to kick-off discussion about adding owner support to UnixFS specs, feel free to open issue in https://github.com/ipfs/specs/issues, or even propose an IPIP yourself.

If there is a spec, open issuer in Kubo to implement it.