Commit Graph
1 Commits
Author SHA1 Message Date
4579d11abc fix: detect compressed kernel modules (.ko.gz, .ko.xz, .ko.zst) (#4740)
* fix: detect compressed kernel modules (.ko.gz, .ko.xz, .ko.zst)

The linux-kernel-cataloger only matched plain *.ko files, missing
compressed modules produced when CONFIG_MODULE_COMPRESS is enabled
(common on Debian 13 / Ubuntu 24.04+). This resulted in near-zero
module packages being reported for such filesystems.

Changes:
- Add *.ko.gz, *.ko.xz, *.ko.zst glob patterns to both the cataloger
  and capabilities.yaml so the file resolver picks up compressed modules
- Add decompressedModuleReader() which detects the extension and
  transparently decompresses via compress/gzip, ulikunitz/xz, or
  klauspost/compress/zstd before handing the ELF bytes to the existing
  parseLinuxKernelModuleMetadata parser
- Promote github.com/klauspost/compress from indirect to direct dependency
- Add unit tests covering all three compression formats plus the
  uncompressed baseline, using a programmatically generated minimal ELF

Fixes #4721

Signed-off-by: Will Bates <william.bates11@outlook.com>

* address reading archives into memory

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

---------

Signed-off-by: Will Bates <william.bates11@outlook.com>
Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>
Co-authored-by: Will Bates <william.bates11@outlook.com>
Co-authored-by: Alex Goodman <wagoodman@users.noreply.github.com>
2026-05-13 13:44:18 -04:00