[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 warner):

 If we must use prefixes, let's use {{{unknown.}}} instead of {{{unk.}}} .
 We don't need these to be short, and abbreviated-to-the-point-of-
 incomprehensibility keywords drive me nuts.

 I don't know if the same argument applies to {{{imm.}}} or {{{ro.}}} or
 whatever.

 I haven't read the rest of the discussion thoroughly enough to have an
 intelligent opinion, but this prefix stuff makes me nervous. OTOH, the
 notion of attaching a "guard" to the cap seems to make sense. I just worry
 about last-minute changes to a two-year old API.

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Ticket URL: <http://allmydata.org/trac/tahoe/ticket/833#comment:37>
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