Re: [PATCH 6/7] fuse: propagate default and file acls on creation

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On Thu, 21 Aug 2025 at 02:52, Darrick J. Wong <djwong@xxxxxxxxxx> wrote:
>
> From: Darrick J. Wong <djwong@xxxxxxxxxx>
>
> Propagate the default and file access ACLs to new children when creating
> them, just like the other kernel filesystems.

Another problem of this and the previous patch is being racy.  Not
"real" filesystems like fuse2fs, but this is going to trip network fs
up badly, where such races would be really difficult to test.

We could add a new feature flag, but we seem to have proliferation of
this sort.  We have default_permissions, then handle_killpriv, then
handle_killpriv_v2.  Seems like we need a flag to tell the kernel to
treat this as a local fs, where it can do all the local fs'y things
without fear of breaking remote fs.

Does that make sense?

Thanks,
Miklos




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