[tahoe-dev] [tahoe-lafs] #833: reject mutable children when *reading* an immutable dirnode

[tahoe-lafs]

#833: reject mutable children when *reading* an immutable dirnode
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 Reporter:  warner                                                                  |           Owner:  davidsarah
     Type:  defect                                                                  |          Status:  assigned  
 Priority:  critical                                                                |       Milestone:  1.6.0     
Component:  code-dirnodes                                                           |         Version:  1.5.0     
 Keywords:  integrity forward-compatibility backward-compatibility confidentiality  |   Launchpad_bug:            
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Comment(by zooko):

 Okay, so the meaning of {{{imm.}}} in English is "I found this cap in an
 immutable context and I couldn't verify whether it is an immutable cap."
 rather than "I found this cap in an immutable context.".  Sounds okay to
 me.

 Replying to [comment:32 davidsarah]:
 > > Should the webapi server tag such caps with something like {{{unk.}}}
 so that the fact that they came from a context where this property
 couldn't be verified is not lost?
 >
 > What would the webapi client do with that fact? {{{imm.}}} and {{{ro.}}}
 are associated with specific conformance requirements, but {{{unk.}}}
 wouldn't be -- it would just be a hint that the webapi client shouldn't
 assume something. It is easier to document that it shouldn't ever make
 that assumption.

 Okay, I'm convinced.

 Great!  Are we out of open issues for this ticket?

 I chatted with Scott Kittermann, a Master of the Universe, and he said we
 still had an excellent chance of getting Tahoe-LAFS v1.6 included in Lucid
 if we upload it to them on Monday 25th instead of (as per our previous
 plan) Wednesday the 20th.  So let's do it!!  :-)

-- 
Ticket URL: <http://allmydata.org/trac/tahoe/ticket/833#comment:35>
tahoe-lafs <http://allmydata.org>
secure decentralized file storage grid