[Bug 2028571] Re: initramfs/klibc-utils contains identical binaries

[Benjamin Drung]

halt and poweroff are hard-links:

$ ls -alh /usr/lib/klibc/bin/ -i | grep  -E 'halt|poweroff'
88867147 -rwxr-xr-x 3 root root 8,9K Mai 21 10:39 halt
88867147 -rwxr-xr-x 3 root root 8,9K Mai 21 10:39 poweroff

But those files are not hard-links in the initrd any more. This is
caused by copying it to a temporary directory.

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https://bugs.launchpad.net/bugs/2028571

Title:
  initramfs/klibc-utils contains identical binaries

Status in initramfs-tools package in Ubuntu:
  Triaged
Status in klibc package in Ubuntu:
  Fix Released

Bug description:
  ```
  $ jdupes -r /usr/lib/klibc/bin
  Scanning: 38 files, 1 items (in 1 specified)
  /usr/lib/klibc/bin/gunzip                                   
  /usr/lib/klibc/bin/gzip
  /usr/lib/klibc/bin/zcat

  /usr/lib/klibc/bin/halt
  /usr/lib/klibc/bin/poweroff
  /usr/lib/klibc/bin/reboot
  ```

  Please replace these binaries with symlinks to reduce the size of the
  uncompressed initramfs.

  ProblemType: Bug
  DistroRelease: Ubuntu 23.04
  Package: klibc-utils 2.0.12-1
  ProcVersionSignature: Ubuntu 6.2.0-25.25-generic 6.2.13
  Uname: Linux 6.2.0-25-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.26.1-0ubuntu2
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: Unity:Unity7:ubuntu
  Date: Mon Jul 24 21:14:36 2023
  Dependencies: libklibc 2.0.12-1
  InstallationDate: Installed on 2022-03-20 (491 days ago)
  InstallationMedia: Ubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
  SourcePackage: klibc
  UpgradeStatus: Upgraded to lunar on 2023-04-20 (95 days ago)

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