Re: [RFC v3 0/2] Support for posix acls in fuse

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Nikolaus Rath wrote:
On Aug 01 2016, Seth Forshee <seth.forshee@xxxxxxxxxxxxx> wrote:
  - Remove passthrough of acl xattrs when fuse acl support is disabled or
    default_permissions is not used.

This last change is user visible, but as fuse filesystems cannot
meaninfully support acls today it's not really a regression.

Are you sure about that? I believe there are FUSE file systems out there
that are parsing/constructing the kernel's xattr representation and
(together with no_default_permissions) support ACLs. Or is there another
problem?

Indeed, the current implementation of Posix ACLs in
ntfs-3g relies on ACLs being sent to user space as
xattrs, with default_permissions not set (and cacheing
disabled). I agree this is not a "meaningful acl
support", but it has been the only way for ten years.

Why should this be changed when FUSE_POSIX_ACL
feature flag is not set in INIT ?

Jean-Pierre
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