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Richacls

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This is an old revision of this page, as edited by Patrickgoetz (talk | contribs) at 21:28, 11 December 2018 (Reference URL was dead; replaced it with a current link to the cited PDF.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Richacls is a Linux implementation of the NFSv4 ACLs which has been extended by file masks to more easily fit the standard POSIX file permission model.[1] Nowadays, they offer the most complex permission model for ext4 file system in Linux operating system. They are even more complex than POSIX ACLs, which means it is not possible to convert back from Richacls to POSIX ACLs without losing information. One of the most important advantages is that they distinguish between write and append permission, between delete and delete child permissions, and make ACL management access discretionary (as opposed to only being only root and the file owner). They are also designed to support Windows interoperability.[2]

Richacls use ext4 extended file attributes (xattrs) to store ACLs.

References

  1. ^ "Richacls - Native NFSv4 ACLs on Linux".
  2. ^ "Implementing an Advanced Access Control Security Model on Linux" (PDF).
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