XPost: linux.debian.bugs.dist   
   From: ben@decadent.org.uk   
      
   Control: tag -1 - patch   
      
   On Fri, 10 Mar 2023 01:54:47 +0000 Birgit Edel  wrote:   
   > Package: initramfs-tools-core   
   > Version: 0.140   
   > Severity: wishlist   
   > File: /usr/sbin/mkinitramfs   
   > Tags: patch   
   >    
   > mkinitramfs supports compression that neither encodes size, nor is    
   > guaranteed to signal the end of compressed archive. Linux refuses to    
   > parse additional archives beyond the first compressed one - unless they    
   > start at 4-byte boundary like uncompressed ones do.   
   >    
   > I request   
   > A) to modify mkninitramfs to append such padding and   
   > B) to add tests to ensure concatenation keeps working (even after, say,    
   > compression algo/lvl changes)   
   [...]   
      
   Currently unmkinitramfs is not able to unpack an initramfs image that   
   has multiple compressed parts.  Since you want mkinitramfs to support   
   this option, I would expect to see a patch that also makes unmkinitramfs   
   support it.   
      
   (There is an open merge request to make unmkinitramfs use 3cpio where   
   available:   
   .   
   I haven't tested whether 3cpio supports multiple compressed parts; if it   
   does then only the tests need to be updated to cover this case.)   
      
   Ben.   
      
   --    
   Ben Hutchings   
   Beware of programmers who carry screwdrivers. - Leonard Brandwein   
      
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