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On Jan 5, 2004, at 1:22 PM, Manuel Bouyer wrote:

>> I certainly have a great deal less objection to having gethostby*()
>> simply re-invoking res_init() internally if there's evidence available
>> that it needs to be called again than I do to having the resolver(3) 
>> do
>> this to itself.  Keeping a copy of the stat() structure and comparing
>> the st_mtime, st_dev, and st_ino values with current results every 
>> time
>> through just as nsdispatch() does seems like the right way to do this
>> and the best alternative would be to only redo the stat if at least 60
>> seconds had elapsed since the last time through.  Note there's no need
>> for using lstat() if you also compare the st_dev and st_ino values.
>
> Well, maybe we're going to have a solution accpetable by everyone then.
> Great !

Uh, I don't really see how this is a better solution.  resolv.conf is 
not a configuration file that gethostby*() should ever have to care 
about.  This is a violation of abstraction, pure and simple.  The 
underlying resolver code should be the one to re-initialize, if 
necessary.

         -- Jason R. Thorpe <thorpej@wasabisystems.com>


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