Danek Duvall wrote:
> ZFS datasets on Solaris (maybe others?) have this nifty little property
> called "aclmode", which is set to "discard" by default[1]. That means that
> when calling chmod() on a file, any non-trivial ACL gets removed. In
> buf_write(), we almost always call mch_setperm(), causing that to happen.
> If a user has backupcopy=no, then the ACL is restored, but if it's set to
> yes, then vim skips the restoration.
>
> I'm not sure how targeted the fix should be, but the attached patch seems
> reasonable. We could keep track of whether mch_setperm() had been called
> previously, but maybe that's overkill for something (not calling it) that's
> very unlikely to happen.
>
> [1] http://docs.oracle.com/cd/E23824_01/html/821-1462/zfs-1m.html
Thanks. This solution makes sense.
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