Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.kernel > #90102

Bug#1032610: reliably composable initramfs - zero-pad output to allow concatenation

Cross-posted to 2 groups.

Show key headers only | View raw

> you want mkinitramfs to support multiple compressed parts

I would caution against that and rather only add the quick and easy bit:

1) Fixing the regression and adding autopkgtest is adds little code yet
solves the hassle for any *manual* workflow that once worked.

2) Actually parsing such archives is way more complicated - and for 
what? Unless
unmkinitramfs was aiming for perfect bug-compatibility with kernel code 
it would
always harbor potential for dangerously misleading output.

> whether 3cpio supports multiple compressed parts

No. Looks like it shuts down even if current decompression stopped short 
of EOF:
https://github.com/bdrung/3cpio/blob/2ffd9dc9ce46f5d885fb066eef73b127889918e2/src/examine.rs#L85
https://github.com/bdrung/3cpio/blob/2ffd9dc9ce46f5d885fb066eef73b127889918e2/src/extract.rs#L181
(Still good, insofar it means my suggested unconditional padding does 
not make it crash.)

Back to linux.debian.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Bug#1032610: reliably composable initramfs - zero-pad output to allow concatenation Ben Hutchings <ben@decadent.org.uk> - 2025-11-17 00:30 +0100
  Bug#1032610: reliably composable initramfs - zero-pad output to allow concatenation Birgit Edel <edelbitter@posteo.de> - 2025-11-17 14:20 +0100

csiph-web