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[leafnode-list] Re: Spool permissions in leafnode-2
On 2009-04-08, Matthias Andree wrote:
> Leafnode-1 and -2 currently use roughly the same spool format:
> Assuming an instact spool, each article has at least two links, one in the
> message.id/NNN/ (*) directory, and one in the news/group/ directories (or
> more if an article is cross-posted to multiple groups you're subscribed
> texpire works in two phases. Phase 1 will look at when the threads in a
> particular newsgroup were last read and unlink those links from the
> news/group/ directories that are past expiry date for the group. After
> that, in phase 2, it will traverse the message.id/ directories and unlink
> all files that have just one link.
> Since the link count is unreliable with a world-readable newsspool:
> leafnode-2 does not make these directories or articles world-readable and
> continues to use the link count.
> Leafnode-1 was designed to offer a traditional (i. e. world-readable)
> spool and cannot use the link count. Instead, it records the Message-IDs
> of articles it kept during the 1st phase, creating up to 1,000 files named
> message.id/NNN/mids - this is the "tracks the seen Message-IDs" part that
> you quoted - and these "mids" files get reused in phase 2. The IDs listed
> in these "mids" files are protected from expiry, the other files are
> removed. This security fix is in place since 1.9.52 which was released 5
> years and 5 days ago.
I guess using the "mids" files is a lot slower than relying on the
link count. Thanks for the explanation.
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