Re: [Bug-tar] problem with sys_drain_input_pipe() removal

[Sergey Poznyakoff]

Hi Mike,

> you may say "well just check the exit status of tar and go with that", but 
> that doesnt work for cases where the decompressor
> crashes/exits/whatever early on and tar gets a short archive.

For the best of my knowledge, it does work for these cases as well. When
extracting using a decompressor, the only signal tar tolerates is
SIGPIPE. If the decompressor exits due to any other signal, or simply
exits with a non-0 exit code, tar reports it and exits with code 2. In
its turn, SIGPIPE can be delivered to the decompressor only because tar
has closed its side of the pipe. In that case tar either knows what it is
doing (as in the described case), or issues error message, if exiting
due to some earlier error. 

Regards,
Sergey