helpGNU cpio - Support: sr #109006, CPIO file size limit

 
 

sr #109006: CPIO file size limit

Submitted by:  Allen Bell <dbdataplus>
Submitted on:  Thu 31 Mar 2016 05:57:28 PM UTC  
 
Category:  None Priority:  5 - Normal
Severity:  2 - Minor Status:  None
Privacy:  Public Assigned to:  None
Open/Closed:  Open Operating System:  GNU/Linux

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Thu 31 Mar 2016 05:57:28 PM UTC, original submission:

this is a behavior that dates back to Unix System 5 - the ability to write archives larger that can be read -- the mythical "Write Only Memory" problem.

This is my question: I assume that the problem cannot be easily fixed or someone would have fixed it, but why does cpio OUT not generate an error when it writes the first byte that cannot be read back? It seems inconsistent to me - either the program can read back all the bytes it writes, or it produces an error when asked to write a byte beyond it's own read capacity.

Maybe it simply can't be done - except TAR can manage to read back any archive it creates. Why can't CPIO?

Allen Bell <dbdataplus>

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

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