cmd/cacheserver,dir/dircache: check access before put or delete

This time for sure, maybe. Don't bother reviewing until augie
is happy.

This CL is preparation for writeback semantics of directory
changes. It does not change the semantics of cache access.
It adds access checks and compares them to the actual results
from the DirServers to make sure they agree logging an
error if they do not. However, it continues to obey the result
from the DirServer if they disagree.

Change-Id: I12d4e43fc6aa758d343df7bf0977cb6190db2130
Reviewed-on: https://upspin-review.googlesource.com/17480
Reviewed-by: Andrew Gerrand <adg@golang.org>
2 files changed
tree: 345e8916b8d3611911a75d01465752b1d9ae9c04
  1. .travis.yml
  2. AUTHORS
  3. CONDUCT.md
  4. CONTRIBUTING.md
  5. CONTRIBUTORS
  6. Gopkg.lock
  7. Gopkg.toml
  8. LICENSE
  9. PATENTS
  10. README.binary
  11. README.md
  12. access/
  13. bind/
  14. cache/
  15. client/
  16. cloud/
  17. cmd/
  18. config/
  19. dir/
  20. doc/
  21. errors/
  22. factotum/
  23. flags/
  24. key/
  25. log/
  26. metric/
  27. pack/
  28. path/
  29. rpc/
  30. serverutil/
  31. shutdown/
  32. store/
  33. subcmd/
  34. test/
  35. transports/
  36. upbox/
  37. upspin/
  38. user/
  39. valid/
  40. vendor/
  41. version/
README.md

Upspin

Augie

Documentation: upspin.io

About the project

Upspin is an experimental project to build a framework for naming and sharing files and other data securely, uniformly, and globally: a global name system of sorts.

It is not a file system, but a set of protocols and reference implementations that can be used to join things like file systems and other storage services to the name space.

Performance is not a primary goal. Uniformity and security are.

Upspin is not an official Google product.

Status

Upspin has rough edges, and is not yet suitable for non-technical users.

Build Status

Contributing

The code repository lives at upspin.googlesource.com and is mirrored to GitHub.

Note that the Upspin project does not use GitHub pull requests, and that we use the issue tracker for bug reports and proposals only.

See the Contribution Guidelines for more information on contributing to the project.

Reporting issues

Please report issues through our issue tracker.

Community

All Upspin users should subscribe to the Upspin Announcements mailing list to receive critical information about the project.

Use the Upspin mailing list for discussion about Upspin use and development.

Code of Conduct

Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.

The Upspin mascot is Copyright 2017 Renee French. All Rights Reserved.