[Git-commits] [grml/grml-debootstrap] 72ce6b: packer: update VBoxGuestAdditions to v6.1.20

Michael Prokop noreply at github.com
Fri May 7 16:02:34 CEST 2021

  Branch: refs/heads/master
  Home:   https://github.com/grml/grml-debootstrap
  Commit: 72ce6b646deca99877f9f8db774b2c09215c7bc1
  Author: Michael Prokop <mika at grml.org>
  Date:   2021-04-29 (Thu, 29 Apr 2021)

  Changed paths:
    M packer/debian64.json

  Log Message:
  packer: update VBoxGuestAdditions to v6.1.20

As present in current Debian/unstable

  Commit: 4d625ea05ba167d60766f86f2ff2edad2cfd561a
  Author: Michael Prokop <mika at grml.org>
  Date:   2021-04-30 (Fri, 30 Apr 2021)

  Changed paths:
    M packer/Makefile
    M packer/fake-uname.c

  Log Message:
  fake-uname: fix gcc argument order and improve preloaded shared library

This includes recent changes as integrated at


- Fix gcc argument order: newer gcc versions have become more picky on
  their argument order, due to the --as-needed default, and require the
  libraries to be linked to, to be passed after the code/objects that
  use them, otherwise they will get dropped as unused. This change is
  required for compiling with gcc v10.2.1-6 as present on
  Debian/bullseye (otherwise fails to execute with `undefined symbol:
- Add `make check` target to run some basic tests
- Also get rid of *.o *.so files in clean target, adjust targets
  accordingly to always clean and then build fake-uname.so afterwards
- Mark as serial-only via .NOTPARALLEL


- Use hidden visibility by default, and export the symbol explicitly.
- Resolve real_uname() only once.
- Return early if the real_uname() fails, to avoid acting on bogus data.
- Call dlerror() before dlsym() to clear any previous errors.
- Compute the release member size from the utsname struct instead of
  hard-coding it.
- Always NUL-terminate the relese buffer, so protect against very long
  environment strings.
- Make various variables into const.

Acked-by: Guillem Jover <gjover at sipwise.com>
Thanks: Guillem Jover

Compare: https://github.com/grml/grml-debootstrap/compare/d13f99b31f8e...4d625ea05ba1

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